// this program is to calculate the sum & difference of 2 numbers
#inlcude<stdio.h>

int main()
	{
	int num1=15;// defining variable num1 of type int
	int num2=20;// defining variable num2 of type int 
	printf(" Sum is %d \n",num1+num2);// %d is the format specifier for int   ,  \n sends cursor to the next line
	printf(" Difference is %d \n",num1-num2);	
  	return 0 ;
	}