#include <stdio.h>
#include <stdlib.h>
#include <math.h>
int main()
{
char a[100];
int b[100];
int i;
int sum ;
printf("请输入:");
gets(a);
for(i = 0;a[i] != '\0';i = i + 2)
{
b[i] = a[i] - 48;
}
for(i = 0;a[i] != '\0';i = i + 2)
{
if(a[i+1] == '+' ) sum = sum + b[i + 2];
if(a[i+1] == '-' ) sum = sum - b[i + 2];
if(a[i+1] == '*' ) sum = sum * b[i + 2];
if(a[i+1] == '/' ) sum = sum / b[i + 2];
if((a[i+1] == '+') && (a[i+3] == '*'))
{
sum = b[i]+b[i+2] * b[i + 4];
}
i = i + 4;
if((a[i+1] == '-') && (a[i+3] == '/'))
{
sum = sum -b[i+2] / b[i + 4];
i = i + 2;
}
}
printf("%d",sum);
return 0;
}