Define function. Write a C program to calculate sum of two numbers using user-defined function.
A function in C is a block of code that performs a specific task. It is a reusable code module that can be called by other parts of a program. Functions help in modular programming, where complex programs are divided into smaller, simpler parts that can be easily understood and maintained.
OUPUT:
enter two number 4 5
the sum of two numbers is 9
PROGRAMS:
#include<stdio.h>
int sum(int*,int*);
int main()
{
int a,b;
printf("enter two number ");
scanf("%d%d",&a,&b);
int...