How to add two numbers using user input

Answer 1

First, Define the values.Example:

int A, B;

Second, use cin and >> for request the user the values and put the variables in the cin for asign the values at the variables.
Example:

cin >> A >> B;

Good Luck!

Answer 2

int first , second ;
printf("Enter first number :" ) ;
scanf("%d",&first) ;
printf("Enter Second number :" ) ;
scanf("%d",&second) ;
printf("\n\t %d ", first+second) ;