#include <stdio.h>
struct mytype
{
int ok;
char ch;
} mytype;
 
struct mytype fundCalculation(int *a,int *b,int *c)
{
struct mytype tmp;
if(*c==*a+*b)  {tmp.ok=1;tmp.ch='+';}
else if(*c==*a-*b) {tmp.ok=1;tmp.ch='-';}
else if(*c==*a * *b) {tmp.ok=1;tmp.ch='*';}
else if(*c==*a / *b) {tmp.ok=1;tmp.ch='/';}
else {tmp.ok=0;tmp.ch=' ';}
 
return tmp;
 
}
main()
{
 
int x=3;
int y=4;
int z=12;
 
printf("%i %c ",fundCalculation(&x,&y,&z).ok,fundCalculation(&x,&y,&z).ch);
 
getchar();      
}