c program subtraction two numbers

For beginners
{I am going write the c program but before you need a c compiler.there are a lot of compilers. like dev c++  Download dev c++ its free and install it in your computer.open  dev c++ go to file-->new-->source file.} 



#include<stdio.h>
#include<conio.h>
main()
{
      int a,b,sub;
      printf("enter first number\n");
      scanf("%d",&a);
      printf("enter second number\n");
      scanf("%d",&b);
      sub=a-b;
      printf("%d - %d = %d",a,b,sub);
      getch();
      }

For beginners

{After typing this program go to execute-->compile & run-->a window will pop-up-->give file name:(anything u like)-->save as type: c source files-->click save.}

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