UVA_621_Secret_Research

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main(int argc, char** argv) {
    int t;/*number of test cases*/
    scanf("%d",&t);char input[10000];
    int num;/*number of input*/
    int n;/*length of string*/
    while(t--){
        scanf("%s",&input);
        if (!strcmp(input,"4")||!strcmp(input,"1")||!strcmp(input,"78")) printf("+\n");
        else{
            n=strlen(input);
            if(input[n-2]=='3'&& input[n-1]=='5') printf("-\n");
            else if (input[0]=='9' && input[n-1]=='4') printf("*\n");
            else if (input[0]=='1' && input[1]=='9' && input[2]=='0') printf("?\n");
        }


    }
    return (EXIT_SUCCESS);
}