#include <stdio.h>
int main() {
//실습1//
/* printf("5*3/2\n");
printf("7*7*3.14\n");
printf("4.5*4.5*4.5\n"); */
//실습2//
/* printf("%d\n");*/
//실습3//
printf("%d\n,5+3");
printf("%d\n",7*2-4);
printf("%d\n",15/2);
return 0;
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