Vaidikalaya
In C language
#include< stdio.h >
int main(){
  int a=10,b=20,sum;
  sum=a+b;
  printf("sum of two numbers:%d",sum);
}


In C++ language
#include< iostream >
using namespace std;
int main(){
  int a=10,b=20,sum;
  sum=a+b;
  cout<<"sum of two numbers:"<<sum;
}