C Exercises: Sum of all even values between two input integers, exclusive input values

Last update on May 27 2022 12:22:03 (UTC/GMT +8 hours)

C Basic Declarations and Expressions: Exercise-114 with Solution

Write a C program that accepts two integers values and calculate the sum of all even values between them, exclusive input values.

Sample Solution:

C Code:

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

int y, i, z;
int l, m, n, ctr1 = 0, ctr2 = 0;
printf("Input two numbers (integer values):\n");
  scanf("%d %d", &m, &n);
  ctr1 = 0;
  printf("\nSum of all even values between %d and %d\n",m,n);
  if (m > n){
  for (l = n + 1; l < m; l++){
      if (l % 2 == 0){

        ctr1 += l;

      }
    }
    printf("%d\n", ctr1);
  }
  else{
    for (l = m + 1; l < n; l++){
      if (l % 2 == 0){

        ctr2 += l;

      }
    }
    printf("%d\n", ctr2);
  }
}

Sample Output:

Input two numbers (integer values):
25
45

Sum of all even values between 25 and 45
350

Sample Output:

Input two numbers (integer values):
27
13

Sum of all even values between 27 and 13
140

Flowchart:

C programming Code Editor:

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C Programming: Tips of the Day

Static variable inside of a function in C

The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo().

The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.

The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over all future calls to foo().

Ref : https://bit.ly/3fOq7XP