/*
#include <stdio.h>
void main(){
printf("Hello world\n");
}
*/
/*
#include <stdio.h>
#include<math.h>
int main()
{
double a,b;
printf("input number : \n");
scanf("%lf",&a);
b=sin(a);
printf("sine of %lf is %lf",a,b);
return 0;
}
*/
/*
#include <stdio.h>
#include<math.h>
void main(){
double a,b;
printf("Hello world\n");
scanf("%lf",&a);
b=cos(a);
printf("this is %lf is %lf",a,b);
}
*/
#include<stdio.h>
#define PRICE 30
int main()
{
int num,total;
num=10;
total=num*PRICE;
printf("total=%d",total);
return 0;
}