Question

How do I create a program with a for loop for evaluating summations: it’s inputs should be a function, k, and n. The program adds from i=k to i=n the value of f(i).

Answer 1

Here I am providing the answer for the above question:

Code:

#include <stdio.h>

void takeInput(int *k,int *n)
{
int i,j;
printf("Enter k value:");
scanf("%d",&i);
printf("Enter n value:");
scanf("%d",&j);
*k=i;
*n=j;
}

int main()
{
int k,n,sum=0;
takeInput(&k,&n);
for(int i=k;i<=n;i++)
{
sum=sum+i;
}
printf("Sum of elements from k to n is:%d",sum);
return 0;
}

Screenshot:

Output:

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