#include<stdio.h>
int main(){
int x = 10;
int y = -3;
printf("x + y =%d\n",x + y);
printf("x - y =%d\n",x - y);
printf("x * y =%d\n",x * y);
printf("x / y =%d\n",x / y);
printf("x% y =%d\n",x% y);
#include<stdio.h>
int main(){
int a,b,c,d,e;
a = 5;
b = 9;
c = 18;
d = a + c;
e = d - b;
printf("%d\n%d\n%d\n%d\n",a + d,c - e,b * a,d - a / e);
#include<stdio.h>
int main(){
int c = 97;
double z,x;
z = x;
x = c;
printf("%d\n",c);
printf("%f\n",x);
printf("%f\n",z);