#includeint main(){int a,b,c;char ch;printf("请输入：");scanf("%d%c%d",&a,&ch,&b);if(ch=='+')c=a+b;else if(ch=='-')c=a-b;else if(ch=='*')c=a*b;else if(ch=='/')c=a/b;printf("%c\n",c);return 0;}