#include <stdio.h>
int main(void) {
// your code goes here
#include <stdio.h>
int a,b,c,d,e,f,g,h,i;
switch(i){
case(1):
f=a+b;
break;
case(2):
g=a-b;
break;
case(3):
h=a*b;
break;
case(4):
if(b!=0){
if(a%b==0){
c=a/b;
else{
d=a/b;
e=a%b;
printf("%d÷%d=%d余り%d",a
,b
,d
,e
);}} break;}
return 0;
}
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