#scanf

[fortunatelycoldengineer]

C language MCQ . . . . write your answer in the comment section https://bit.ly/3UA5nJb You can check the answer at the above link at Q.no. 20

[hauxicrook]

Not me forgetting to use '&' abt everytime i use scanf()

[theoisgoneagain]

C Basics

I'm bored

C-code Basics

Just the basics of C

Every command ends with semi-colon => ;

Starting point of the program

int main() {   }

int main(void) {}

Ending the program

return 0; }

Libraries

#include <library>

stdlib.h = standard library

stdio.h = input/output library

math.h = for maths

array.h = you won't need here, but it's good to know that it exists

print word

printf("enter letters here\n");

\n = new line

user input (number)

float = ex. 23.455

float n;

scanf("%f", &n);

int = ex. 23

int n;

scanf("%i", &n); 

char = symbols, letters

char n;

scanf("%c", &n); (only one letter input!)

char = %c

int = %i, %d

float = %f

|| = or

&& = and

Loops

do... while

do {code block} while (condition)

while

while( condition) {code block}

for

for( start point; end point; counter) {code block}

example

do... while

do {

printf("do you want to repeat this block?\n");

scanf("%c" &n);

} while( n = 'y' || n = 'Y');

while

while(n<12){

printf("Please enter your number\n");

scanf("%i", &n);}

for

(i++ = i+1)

for(int i=0; i<n; i++) {  printf("my number is %i", i);  }

 if

if( condition) {block}

else if(condition 2) {block 2}

else {block 3}

ex.

if(n < 0) { printf("%f is <0", n); }

else if( n >0) {printf("%f is >0",n); }

else {printf("%f = 0",n); }

Program Example

#include <stdio.h>

#include <stdlib.h>

int main(void) {

int age;

float number, favnumb;

char letter; 

do {

printf("Please enter your age");

scanf("%i",&age);

while(age <0) {

printf("\nError age must be bigger or equal to 0\n please enter age");

scanf("%i",&age); }

printf("\nwhat is your favourite number?\n");

scanf("%f", &favnumb); 

printf("\n do you want to repeat the process?");

scanf("%c", &letter);

if(letter == 'y') {

printf("let's start again); }

else if(letter =='Y'){

printf("alright, let's start again); }

else{

do {

printf("please enter y or n");

scanf("%c"&letter);

} while(letter != 'y' || letter != 'Y')

} while (letter == 'y' || letter == 'Y')

printf("Goodbye");

return 0; }

Sorry if there are any typos or stuff

Sorry it looks ugly too :(

[tccicomputercoaching]

Header Files in C Programming

Header file is The collection of predefined standard library functions is included in header files.

The preprocessing directive "#include" is used to include header files with the ".h" extension in the program.

SOME FUNCTIONS DEFINED UNDER THE STDIO.H

printf() - This function is used to print the character, string, float, integer, octal and hexadecimal values onto the output screen.

scanf() - This function is used to read a character, string, numeric data from keyboard.

and many more function.

some examples of header files

math.h - mathematical related operations String.h - string related operation stdlib.h and many more.

In C programming, header files play a very important role. They allow programmers to use predefined functions and macros, which saves time and effort. Instead of rewriting common functions (like input/output operations, string manipulations, or mathematical calculations), we can simply include a header file and directly use the required functions.

Some important points:

Header files reduce code redundancy.

They make programs easier to manage and modular.

Custom header files can also be created by programmers as per their needs using .h extension.

Location: Bopal & Iskcon-Ambli in Ahmedabad, Gujarat

Call now on +91 9825618292

Visit Our Website: http://tccicomputercoaching.com/

[codingprolab]

Programming Assignment #1: Ohce1 COP 3502

In this assignment, you will write a main() function that can process command line arguments – parameters that are typed at the command line and passed into your program right when it starts running (as opposed to using scanf() to get input from a user after your program has already started running). Those parameters will be passed to your main() function as an array of strings, and so this…

[ankitcodinghub]

CSE131 - Homework #2 Solved

Objective : Learn how to use the printf() and scanf() functions in C. 1.1 Write a program to input your student ID, name, height, weight, and blood type, then calculate the value of BMI and output all variables. Hint：The formula of BMI is weight (kg) / height2 (m). Input : B123456789, 王小明, 183.5, 67.25, O Output : 1.2 Write a program to print the values of the characters “A”, “a” and “0” in…

[manishmishra45]

Understanding the islower Function in C

The islower function in C is a useful tool from the <ctype.h> library that helps programmers identify whether a given character is a lowercase letter. This function simplifies the process of validating input, formatting text, and handling character-based operations in C programming. In this article, we will explore how the islower function works, its syntax, and practical examples of how to use it effectively.

What is the islower Function in C?

The islower function is part of the standard C library (<ctype.h>) and is used to check if a character is a lowercase letter (from 'a' to 'z'). When a lowercase character is passed to the function, it returns a non-zero value (true). If the character is not a lowercase letter, it returns zero (false).

Syntax:

c

CopyEdit

int islower(int ch);

ch – The character to be checked (passed as an int).

Return Value:

Returns a non-zero value (true) if the character is a lowercase letter.

Returns zero (false) if the character is not a lowercase letter.

How to Use islower in C

To use the islower function, you need to include the <ctype.h> header file at the beginning of your program. Here’s a simple example that demonstrates how to use the islower function to check if a character is lowercase:

c

CopyEdit

#include <stdio.h> #include <ctype.h> int main() { char ch; printf("Enter a character: "); scanf("%c", &ch); if (islower(ch)) { printf("%c is a lowercase letter.\n", ch); } else { printf("%c is NOT a lowercase letter.\n", ch); } return 0; }

Explanation:

The <ctype.h> library is included to access the islower function.

The program takes a character input from the user.

The islower function checks if the input character is a lowercase letter.

If the character is lowercase, a success message is printed; otherwise, a failure message is displayed.

Why Use islower in C Programming?

Input Validation: The islower function can be used to validate user input, ensuring that only lowercase characters are accepted where needed.

Text Formatting: It allows programmers to format strings and characters consistently by distinguishing between uppercase and lowercase characters.

Data Processing: When processing text data, islower helps in filtering out specific characters or handling text-based logic.

Practical Example of islower in C

Here's another example that counts the number of lowercase letters in a string using islower:

c

CopyEdit

#include <stdio.h> #include <ctype.h> int main() { char str[] = "Hello, World!"; int count = 0; for (int i = 0; str[i] != '\0'; i++) { if (islower(str[i])) { count++; } } printf("Number of lowercase letters: %d\n", count); return 0; }

Explanation:

The program defines a string.

A for loop iterates through each character of the string.

The islower function checks if each character is lowercase.

If true, the count variable is incremented.

Finally, the total number of lowercase letters is printed.

Common Mistakes and Best Practices

✅ Best Practices:

Always include <ctype.h> when using islower.

Ensure that the input is an integer or a character; otherwise, it may cause undefined behavior.

Use islower in combination with other ctype.h functions like toupper() or tolower() for better string handling.

❌ Common Mistakes:

Passing a string instead of a character to islower.

Forgetting to include <ctype.h>, leading to compiler errors.

Misunderstanding the return value; islower returns a non-zero value (true) for lowercase letters, not just 1.

Conclusion

The islower function in C is a simple yet powerful tool for handling character-based data. It helps in validating and processing lowercase characters efficiently, ensuring clean and consistent text formatting. By mastering the islower function, you can enhance the reliability and accuracy of your C programs. Remember to include the <ctype.h> library and test your code thoroughly to avoid common mistakes. The islower function is a valuable asset in any C programmer’s toolkit.

[surajkumasblog]

Understanding 'C' as a Vowel: Checking Vowel or Consonant in C

When c is vowel, check vowel or consonant in c, one common task is checking whether a given character is a vowel or a consonant. In this discussion, we will explore how to determine whether the letter 'C' falls into either category. Is 'C' a Vowel or a Consonant? In the English language, vowels are typically A, E, I, O, and U, while consonants include all other letters. Based on this classification, 'C' is generally considered a consonant because it is not one of the five vowels. However, in programming logic, it is important to create a method that can check any given letter and determine whether it is a vowel or a consonant. Checking Vowel or Consonant in C (Programming Language) If you are writing a program in C language to check whether a character is a vowel or consonant, you can use conditional statements such as if or switch. Below is an example of how you can achieve this in C: c Copy Edit

include

void checkVowelOrConsonant(char ch) { // Convert to lowercase for uniform comparison ch = tolower(ch); // Check if the character is a vowel if (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u') { printf("%c is a vowel.\n", ch); } else if ((ch >= 'a' && ch <= 'z')) { // Ensure it's an alphabet character printf("%c is a consonant.\n", ch); } else { printf("%c is not a valid alphabet letter.\n", ch); } } int main() { char ch; // Taking user input printf("Enter a character: "); scanf("%c", &ch); // Function call to check vowel or consonant checkVowelOrConsonant(ch); return 0; } How the Program Works: The user inputs a character. The program converts it to lowercase to ensure uniform comparison. It checks if the character matches any of the vowels (a, e, i, o, u). If it matches, the program prints that the character is a vowel. If it is a letter but not a vowel, it is classified as a consonant. If the input is not a letter, it informs the user that the input is invalid. Example Output: mathematica Copy Edit Enter a character: C C is a consonant. Why is This Important? This program helps beginners understand conditional logic in C. It demonstrates how to handle character input and apply logical conditions. It is a fundamental exercise in string and character processing in programming. Discussion Points: How would you modify this program to handle uppercase and lowercase letters differently? Can this logic be applied to different languages or adapted for other use cases? How can we optimize this program further?

[programmingandengineering]

Lab #2: Programs That Calculate

Objective In this lab you will be writing three short programs using variables and arithmetic operators. Input and output must be done using scanf and printf. You will make use of the standard I/O and math libraries. In your programs, you may only use the programming techniques presented in lectures up to this point. It is highly recommended that you document your program with comments. Your…

[daikenkki]

Sonic SCANF by itsHelias94

[igurayaox]

<Div>

Printf "Solicitação de amizade /n.2f";

Scanf"%history, love";

<Div>

Printf"Acho que está de mais pra mim /n.2f";

Scanf"%end, love";

Return to 0;

<Div>

Back to 0;

[fortunatelycoldengineer]

C language MCQ . . . . write your answer in the comment section https://bit.ly/3UA5nJb You can check the answer at the above link at Q.no. 33

[vultrsblog]

Understanding isalpha() in C: A Guide to Checking Alphabetic Characters

The isalpha c function in C is part of the library and is used to check whether a given character is an alphabetic letter (either uppercase or lowercase). This function is commonly used in input validation, text processing, and various string-related operations where distinguishing letters from other characters is necessary.

Syntax c Copy Edit

include

int isalpha(int ch); Parameter: ch – The character to be checked (typically passed as an int). Return Value: Returns nonzero (true) if ch is a letter (A-Z or a-z). Returns zero (false) if ch is not an alphabetic letter. Example Usage Here’s a simple program demonstrating how isalpha() works:

c Copy Edit

include

include

int main() { char c;printf("Enter a character: "); scanf("%c", &c); if (isalpha(c)) { printf("'%c' is an alphabetic character.\n", c); } else { printf("'%c' is NOT an alphabetic character.\n", c); } return 0;

} Explanation of the Code: The user inputs a character. The program checks whether the character is alphabetic using isalpha(). It prints a message indicating whether the character is a letter or not. Practical Use Cases of isalpha() Input Validation: Ensuring user input consists of only letters (e.g., checking names). Lexical Analysis: Tokenizing strings in programming language parsers. Data Cleaning: Removing non-alphabetic characters from text input. Common Mistakes and Considerations Passing a non-character value: Ensure that isalpha() is used with valid character inputs. Locale Sensitivity: isalpha() may behave differently depending on the locale settings for extended character sets. Use with char vs. int: Since isalpha() expects an int, be cautious when passing char, especially negative values, to avoid undefined behavior. Alternative Functions isdigit() – Checks if a character is a digit (0-9). isalnum() – Checks if a character is alphanumeric (A-Z, a-z, 0-9). isspace() – Checks for whitespace characters. Conclusion The isalpha() function is a simple but powerful tool in C for verifying alphabetic characters. It is widely used in text processing and input validation. Understanding its behavior helps in writing efficient and error-free programs.

[removeload-academy]

Mastering C If Statements: Examples and Usage in Removeload

C programming is one of the most fundamental and widely used languages in software development. Among its core concepts, conditional statements play a crucial role in decision-making within programs. Understanding how to use the if, if-else, and else-if statements effectively is essential for writing efficient code. At Removeload Educational Academy, we aim to simplify complex programming concepts for learners through live examples and easy-to-understand explanations. In this blog, we will explore how C if statements work, along with practical examples to enhance your understanding.

Understanding C If Statements

An if statement in C is used to execute a block of code only when a specified condition is met. It helps programmers control the flow of execution based on logical conditions.

Syntax of C If Statement:

if (condition) { // Code to execute if the condition is true }

For example:#include <stdio.h> int main() { int num = 10; if (num > 0) { printf("Number is positive.\n"); } return 0; }

In the above C if statement removeload example, the program checks whether num is greater than zero and prints the result accordingly.

C If Statement Example

Let’s take another example to understand how conditions work inside an if statement.#include <stdio.h> int main() { int age; printf("Enter your age: "); scanf("%d", &age); if (age >= 18) { printf("You are eligible to vote.\n"); } return 0; }

Here, the program asks for user input and checks if the age is 18 or above before allowing them to vote. This C if statement example helps in real-world decision-making scenarios.

C If-Else Statement Example

The if-else statement extends the if statement by providing an alternative code block if the condition evaluates to false.

Syntax of If-Else Statement:

if (condition) { // Code to execute if condition is true } else { // Code to execute if condition is false }

For instance:#include <stdio.h> int main() { int num; printf("Enter a number: "); scanf("%d", &num); if (num % 2 == 0) { printf("Even number.\n"); } else { printf("Odd number.\n"); } return 0; }

This C if else statement example checks whether a given number is even or odd, ensuring dynamic decision-making in programs.

C Else-If Statement Removeload

The else-if ladder is used when multiple conditions need to be checked sequentially.

Syntax of Else-If Statement:

if (condition1) { // Code block for condition1 } else if (condition2) { // Code block for condition2 } else { // Code block if all conditions fail }

Example:#include <stdio.h> int main() { int marks; printf("Enter your marks: "); scanf("%d", &marks); if (marks >= 90) { printf("Grade A\n"); } else if (marks >= 75) { printf("Grade B\n"); } else if (marks >= 50) { printf("Grade C\n"); } else { printf("Fail\n"); } return 0; }

This C else if statement removeload program assigns grades based on marks, demonstrating the structured approach of the else-if ladder.

About Removeload Educational Academy

Removeload Educational Academy is a free online e-learning tutorial portal that provides easy-to-understand programming tutorials with live examples. We aim to make learning programming languages accessible to students and developers of all levels. Our platform offers comprehensive tutorials covering fundamental to advanced concepts, ensuring that learners grasp programming effectively.

By following our structured tutorials, students can learn C programming efficiently and gain hands-on coding experience. Join us at Removeload Educational Academy and start your programming journey today!

Mastering conditional statements in C is essential for effective programming. With the knowledge of if, if-else, and else-if statements, you can create more dynamic and efficient applications. Keep practicing, and explore more tutorials at Removeload Educational Academy to strengthen your coding skills!

[myprogrammingsolver]

Lab #2: Programs That Calculate

Objective In this lab you will be writing three short programs using variables and arithmetic operators. Input and output must be done using scanf and printf. You will make use of the standard I/O and math libraries. In your programs, you may only use the programming techniques presented in lectures up to this point. It is highly recommended that you document your program with comments. Your…

[codingprolab]

CSCE 1040 Homework 1

You are to write a program that processes grade data using structures. Use scanf to input data and printf to output the results. You may also use C++ style I/O if you prefer. You are to work individually. • • Include your name in the code comments. Failure to include your name may lead to a grade of zero. • Name your file +ZN.cSS. Failure to name the file correctly may lead to a grade of zero. •…