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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<iostream.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(); cout<<"enter value for a "; cin>>a; cout<<"enter value for b "; cin>>b; s=sum(a,b); cout<<"sum of numbers between a and b is "<<s; getch(); }