算數運算式求值

不帶括弧時，直接遍曆一次，再累和

#include <stdio.h>#include <string.h>int main(){char ch;int a[200], temp;while(scanf("%d", &a[0]) != EOF){int i = 0;while(scanf("%c", &ch) != EOF && ch != '\n'){scanf("%d", &temp);if(ch == '+') a[++i] = temp;else if(ch == '-') a[++i] = -temp;else if(ch == '*') a[i] *= temp;else if(ch == '/') a[i] /= temp;}for(int j = 1; j <= i; ++j)a[0] += a[j];printf("%d\n", a[0]);}return 0;}