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//program to create a function that calculates sum of numbers between two numbers a and b (a nd b are passed to function as integer arguments ) #include<iostream.h> #include<conio.h> void sum(int,int); void sum(int a,int b) { int sum=0; int i; for(i=a;i<=b;i++) { sum=sum+i; } cout<<"sum of numbers between a and b is "<<sum; } void main() { int a,b; clrscr(); cout<<"enter value for a "; cin>>a; cout<<"enter value for b"; cin>>b; sum(a,b); getch(); }