In C programming, loops are used to execute a set of statements repeatedly until a certain condition is met. There are three types of loops in C: the while loop, the for loop, and the do-while loop. In this article, we will focus on the do-while loop and the continue statement.

Do-While Loop

The do-while loop is similar to the while loop, but the difference is that in the do-while loop, the condition is checked at the end of the loop. This means that the statements inside the loop will be executed at least once, even if the condition is false. The syntax of the do-while loop is as follows:

do {
   // statements
} while (condition);

Let's take an example to understand this better:

#include <stdio.h>

int main() {
   do {
      printf("Hello World!\n");
   } while (0);

   return 0;
}

output

Even though the condition is false, the loop is executed once, and the output is "Hello World!". Now let's take a more practical example:

#include <stdio.h>

int main() {
   int num;
   char flag;

   do {
      printf("Enter a number: ");
      scanf("%d", &num);
      printf("Square of %d is %d\n", num, num * num);
      printf("If you want to enter another number, enter y/n: ");
      fflush(stdin);
      scanf("%c",&flag);
   } while (flag == 'y');

   return 0;
}

output:

In this example, the user is asked to enter a number, and the program calculates its square. Then the user is asked if they want to enter another number. If the user enters 'y', the loop continues, and if the user enters 'n', the loop terminates.

Continue Statement

The continue statement is used to skip a particular iteration of a loop. When the continue statement is encountered, the control passes to the beginning of the loop, and the next iteration is started. The syntax of the continue statement is as follows:

continue;

Let's take an example to understand this better:

#include <stdio.h>

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

   while (i <= 5) {
      while (j <= 5) {
         if (i == j) {
            j = j + 1;
            continue;
         }
         printf("(%d %d) ", i, j);
         j = j + 1;
      }
      j = 1;
      i = i + 1;
   }

   return 0;
}

output

Conclusion: