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C++ C++;:函数自动使用50在输出前扣除/增加输入数_C++_C++11 - Fatal编程技术网

C++ C++;:函数自动使用50在输出前扣除/增加输入数

C++ C++;:函数自动使用50在输出前扣除/增加输入数,c++,c++11,C++,C++11,我试图制作一个程序,获取用户的整数输入,然后将整数中的每一位数字过滤成偶数和奇数。当我完成代码时没有任何错误,但是程序没有正确运行 我的代码: int main() { int input = NULL; int EvenNumbering = 0; int OddNumbering = 0; cout << "Please input a number: "; cin >> input; string str = to

我试图制作一个程序,获取用户的整数输入,然后将整数中的每一位数字过滤成偶数和奇数。当我完成代码时没有任何错误,但是程序没有正确运行

我的代码:

int main() {
    int input = NULL;
    int EvenNumbering = 0;
    int OddNumbering = 0;

    cout << "Please input a number: ";
    cin >> input;

    string str = to_string(input); //Convert it to string
    std::vector<int> EvenNo(str.length());
    std::vector<int> OddNo(str.length());

    //Now filter Even number and Odd number
    for (char x : str) {
    //for (int x = 0; x < str.length();x++ ) {
        //int z = (int)str.at(x);
        int z = (int)x;
        if (z % 2 == 0) {
            EvenNo[EvenNumbering] = z;
            EvenNumbering++;
        }
        else {
            OddNo[OddNumbering] = z;
            OddNumbering++;
        }
    }
    cout << endl;
    cout << "Even Numbers: ";

    for (int x : EvenNo) {
        cout << x << ", ";
    }

    cout << endl;
    cout << "Odd Numbers: ";

    for (int x : OddNo) {
        cout << x << ", ";
    }

    cout << endl;
    system("pause");
    return 0;
}
intmain(){
int输入=NULL;
整数=0;
int=0;
cout>输入;
string str=to_string(输入);//将其转换为string
标准::向量EvenNo(str.length());
std::vector OddNo(str.length());
//现在过滤偶数和奇数
用于(字符x:str){
//对于(int x=0;x由于Sam Varshavchik的评论,问题得以解决

解决方案:
int z=(int)x;
更改为
int z=(int)x-'0';
您可以从
int
切换到使用
无符号字符
,以提供更优雅的解决方案。此外,
推回
是向未知长度的向量添加元素的常用方法。否则,您或多或少会得到它

#include <iostream>
#include <vector>

using namespace std;

int main() {
    int input = 0;

    cout << "Please input a number: ";
    cin >> input;

    string str = to_string(input); //Convert it to string
    std::vector<unsigned char> EvenNo;
    std::vector<unsigned char> OddNo;

    //Now filter Even number and Odd number
    for (unsigned char x : str) {
        if (x % 2 == 0) {
            EvenNo.push_back(x);
        }
        else {
            OddNo.push_back(x);
        }
    }
    cout << endl;
    cout << "Even Numbers: ";

    for (unsigned char x : EvenNo) {
        cout << (unsigned char)x << ", ";
    }

    cout << endl;
    cout << "Odd Numbers: ";

    for (unsigned char x : OddNo) {
        cout << x << ", ";
    }

    cout << endl;
    system("pause");
    return 0;
}
#包括
#包括
使用名称空间std;
int main(){
int输入=0;
cout>输入;
string str=to_string(输入);//将其转换为string
std::载体EvenNo;
std::矢量OddNo;
//现在过滤偶数和奇数
for(无符号字符x:str){
如果(x%2==0){
EvenNo.推回(x);
}
否则{
奥德诺。推回(x);
}
}

看一下ASCII图表,看看你是否能自己找出原因。如果不能,试着编译以下程序:
int c='1';std::cout