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Introducing while loop in C. Simple program with detailed explanation.
(Similar post on while loop is here.)
(For Part 2 of this tutorial, see here.)

Introducing while Loop in C
Loops are used to execute a specific piece of code multiple times.

while (some condition)
{
    // block of code
}

As long as the condition is true, the block of code within the while loop is repeatedly executed.

Q. Print “Good Morning” three times.

Solution

#include <stdio.h>
int main()
{
    int i = 1;
    while (i <= 3)
    {
        printf("Good Morning\n");
        i++;
    }
    printf("Out of the loop now\n");
    return 0;
}

Output

Good Morning
Good Morning
Good Morning
Out of the loop now

For a detailed explanation of the above program, please refer to the images above.