c++ string zhuan int

引用中的代码演示了将string转换为int的方法。可以使用stof函数将string转换为float，然后使用round函数将float四舍五入为最接近的整数，再使用to_string函数将int转换为string。以下是一个示例代码：

#include <iostream>
#include <string>
#include <cmath>

std::string strToInt(const std::string& str) {
    float floatNum;
    try {
        floatNum = std::stof(str);
    } catch(const std::exception&) {
        // 处理异常
    }
    int intNum = std::round(floatNum);
    std::string strNum = std::to_string(intNum);
    return strNum;
}

int main() {
    std::string str = "-0.898";
    std::string result = strToInt(str);
    std::cout << result << std::endl;
    return 0;
}

这段代码首先将string转换为float类型，然后使用round函数将float四舍五入为最接近的整数，再使用to_string函数将int转换为string。最后，代码会打印出转换后的整数字符串。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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