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//program to create a function that returns sum of numbers between a and b passed to function as integer arguments #include<stdio.h> #include<conio.h> int sum(int,int); int sum(int a,int b) { int i; int s=0; for(i=a;i<=b;i++) { s=s+i; } return s; } void main() { int a,b; int s; clrscr(); printf("enter value for a "); scanf("%d",&a); printf("enter value for b "); scanf("%d",&b); s=sum(a,b); printf("sum of numbers between a and b is %d",s); getch(); }