[C ++] Input Multiple rows of numbers to an array and multiple rows of arrays.

[C ++] Input Multiple rows of numbers to an array and multiple rows of arrays.

The input format of a company's pen exam question the day before yesterday is a multi-line number. Each line is separated by a space and ended with a line break number into multiple arrays. In JAVA, there are corresponding functions that directly split a row into an array. I feel that the input method in C ++ is still quite strange. Today I come up with a solution.

Ideas:

Read one character each time to determine whether it is EOF. If it is, it jumps out of the loop;

Not EOF;

When a line break is read, it indicates that a line ends and the array is processed;

The read character. If it is not a space, a temporary string is saved;

If it is a space, the string is converted to an integer and pushed into the array;

Note:

Consecutive space input must be judged; otherwise, a heap of 0 will be entered;

When reading line breaks, you need to save the final temporary string to the array;

Code:

#include<iostream>#include<string>#include<vector>#include<cstdlib>using namespace std;int main() {    char flag;    while ((flag=getchar())!=EOF) {        putchar(flag);        string tmpStr;        vector<int> buff;        char c;        while ((c = getchar()) != '\n') {            if (c != ' ')                tmpStr.push_back(c);            else {                if (tmpStr != "") {                    buff.push_back(atoi(tmpStr.c_str()));                    tmpStr = "";                }            }        }        if(tmpStr!="")            buff.push_back(atoi(tmpStr.c_str()));        for (auto a : buff)            cout << a << ' ';        cout << '\n';    }}