#include<iostream>
#include<string>
#include<cmath>
#include<sstream>
#include<graphics.h>
#include<conio.h>

std::string int_to_str(int n) {
	std::stringstream ss;
	std::string str;
	ss << n;
	ss >> str;
	return str;
}
int str_to_num1(const char*& str) //转换类型
{
    if (!(str[0] == '-' || (str[0] >= '0' && str[0] <= '9'))) {
        return INT_MIN;
    }
    int n = 0;
    while (str[n] != '\0') {
        n++;
    }
    int number = 0;
    if (str[0] != '-') {
        for (int i = 0; i < n; i++) {
            if (!(str[i] >= '0' && str[i] <= '9')) {
                return INT_MIN;
            }
            number += (str[i] - '0') * pow(10, n - i - 1);
        }
    }
    if (str[0] == '-') {
        for (int i = 1; i < n; i++) {
            if (!(str[i] >= '0' && str[i] <= '9')) {
                return INT_MIN;
            }
            number += (str[i] - '0') * pow(10, n - i - 1);
        }
        number *= -1;
    }
    return number;
}
int str_to_num(const std::string& str) //转换类型
{
    const char* data = str.c_str();
    int number = str_to_num1(data);
    return number;
}

// 无背景贴图
//void transparentimage3(IMAGE* dstimg, int x, int y, IMAGE* srcimg) //新版png
//{
//    HDC dstDC = GetImageHDC(dstimg);
//    HDC srcDC = GetImageHDC(srcimg);
//    int w = srcimg->getwidth();
//    int h = srcimg->getheight();
//    BLENDFUNCTION bf = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
//    AlphaBlend(dstDC, x, y, w, h, srcDC, 0, 0, w, h, bf);
//}


#pragma once