C Exercises: Sum all numbers between two given numbers (inclusive) not divisible by seven

C Basic Declarations and Expressions: Exercise-119 with Solution

Write a C program to calculate the sum all numbers between two given numbers (inclusive) not divisible by 7.

Sample Solution:

C Code:

#include <stdio.h>
int main () {

  int a, b, sum_nums = 0, i, temp = 0;
  printf("Input two numbers(integer):\n");
  scanf("%d %d", &a, &b);

  if (b < a)
  {

    temp = a;
    a = b;
    b = temp;


  }

  for (i = a; i <= b; i++)
  {

    if (i % 7 != 0)
    {
      sum_nums += i;

    }
  }
  printf("Sum of all numbers between said numbers (inclusive) not divisible by 7:\n");
  printf("%d\n", sum_nums);
}

Sample Output:

Input two numbers(integer):
25
5
Sum of all numbers between said numbers (inclusive) not divisible by 7:
273

Sample Output:

Input two numbers(integer):
6
36
Sum of all numbers between said numbers (inclusive) not divisible by 7:
546

Flowchart:

C programming Code Editor:

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