taora4pheptoan

#include<stdio.h>
int main(){
	int x,y,ketqua;
	char opera; 
	printf("nhap so thu nhat ");
	scanf("%d",&x);
	printf("nhap so thu hai ");
	scanf("%d",&y);
	printf("nhap phep toan: \n");
	scanf("%c",&opera); 
	switch(opera){
		case '+': printf("ket qua la: %d+%d=%d \n",x,y,x+y);
		break;
		case '-': printf("ket qua la: %d-%d=%d\n",x,y,x-y);
		break;
		case '*': printf("ket qua la: %d*%d=%d \n",x,y,x*y);
		break;
		case '/': printf("ket qua la: %d/%d=%d \n",x,y,x/y);
		break;	
	} 
	return 0; 
}