nested while loop in C

Sure! Here is an example of a nested while loop in C, along with explanations for each step:

#include <stdio.h>

int main() {
   int i = 1;
   int j = 1;

   while (i <= 3) {
      while (j <= 3) {
         printf("i: %d, j: %d\n", i, j);
         j++;
      }

      i++;
      j = 1;
   }

   return 0;
}

Step 1: Initialization

In this step, we declare and initialize two variables i and j to 1. These variables will be used as loop counters.

int i = 1;
int j = 1;

Step 2: Outer while loop

In this step, we have an outer while loop that checks the condition i <= 3. If the condition is true, the code inside the loop will be executed; otherwise, the loop will terminate.

while (i <= 3) {
   ...
}

Step 3: Inner while loop

Inside the outer while loop, we have an inner while loop that checks the condition j <= 3. If the condition is true, the code inside the loop will be executed; otherwise, the loop will terminate.

while (j <= 3) {
   ...
}

Step 4: Print statement

Inside the inner while loop, we have a printf statement that prints the values of i and j.

printf("i: %d, j: %d\n", i, j);

Step 5: Incrementing j

After executing the code inside the inner while loop, we increment the value of j by 1.

j++;

Step 6: Incrementing i and resetting j

After the inner while loop terminates, we increment the value of i by 1 and reset the value of j to 1.

i++;
j = 1;

Step 7: Loop continuation or termination

After executing the code inside the outer while loop, we check the condition i <= 3. If the condition is true, the loop continues to the next iteration; otherwise, the loop terminates.

while (i <= 3) {
   ...
}

Step 8: Program termination

After the outer while loop terminates, we reach the end of the program and return 0, indicating successful execution.

return 0;

I hope this helps! Let me know if you have any further questions.