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While loop in C

A while loop in programming is used to execute a block of code repeatedly as long as a given condition remains true. The loop checks the condition before executing the code block.

Flowchart:-

Syntax:

while(condition){
    //code to be executed
}
Example 1:
#include <stdio.h>

int main() {
    int i = 1;

    while (i <= 10){
        printf("%d\n", i);
        i++;
    }

    return 0;
}

Output:

1
2
3
4
5
6
7
8
9
10
Example 2: Multiplication Table using while loop in C
#include <stdio.h>

int main() {
    int num, i = 1;

    printf("Enter a number: ");
    scanf("%d", &num);

    while (i <= 10){
        printf("%d x %d = %d\n", num, i, num * i);
        i++;
    }

    return 0;
}

Output:

Enter a number: 5

5 x 1 = 5
5 x 2 = 10
5 x 3 = 15
5 x 4 = 20
5 x 5 = 25
5 x 6 = 30
5 x 7 = 35
5 x 8 = 40
5 x 9 = 45
5 x 10 = 50
Example 3: Star printing using while loop in C
#include <stdio.h>

int main() {
    int i = 1;

    while (i <= 10){
        printf("* \n", i);
        i++;
    } 

    return 0;
}

Output:

* 
* 
* 
* 
* 
* 
* 
* 
* 
*