C++输入一个字符串,只有加号和数字,比如1+2+3+4,要求解析并求出和,在线...答:include <iostream>#include <string>#include <vector>using namespace std;const int N = 10000;int lch[N], rch[N], res[N], top = 0;char sym[N];int toDigit(const string &str){ int ret; char tmp[50]; sprintf(tmp, "%s", str.c_str()); sscanf(tmp, "%d", &ret...
一个觉得很难的C语言问题。对两个数字字符串相加。答:很难才10分啊 include<stdio.h>#include<string.h>int main(){ int i,t,j=1,n,len,k; char sum[1009],sa[1009],sb[1009]; scanf("%d",&t); getchar(); while(t--) { for(i=0;i<1009;i++) sum[i]='0'; scanf("%s%s",sa,sb); len=s...