Integer Data Type in C

Program 1

// Program to show int dta type facts
#include<stdio.h>
#include<conio.h>
int main()
{
      system("cls");
        int a,b;
        printf("Enter Two Number");
        scanf("%d%d",&a,&b);
        printf("Before Swaping %d  %d ",a,b);
           a=a+b;
           b=a-b;
           a=a-b;
        printf("\nAfter Swaping %d  %d ",a,b);
      return 0;
}