Question

write a C program to find sum of first 10 natural numbers using do while loop​

Answer 1

Solution:

The given problem is solved in C.

#include <stdio.h>

int main() {

   int i=1,sum=0;

   do{

       sum+=i;

       i++;

   } while(i<11);

   printf("Sum of first ten natural numbers = %d", sum);

   return 0;

}

Explanation:

1. Line 1: Includes a header file containing all the standard input output library functions.
2. Line 2: Start of main() method.
3. Line 3: Declare two variables i and sum. Variable i stores the natural number 1 and sum stores the sum of the numbers.
4. Line 4: Start of do-while loop.
5. Line 5: Value of i is added to the sum.
6. Line 6: Value of i is incremented to get the next natural number.
7. Line 7: End of loop with the condition i < 11 since we have to calculate the sum of first ten natural numbers.
8. Line 8: Sum is displayed on the screen.
9. Line 9: Function returns 0 since the function is of return-type and not void.
10. Line 10: End of main() method.

Refer to the attachment for output.