Question

我的代码的这一部分的想法相对简单;我正在做一个遍历某个整数范围的for循环，迭代的值放在一个数字到字符串的转换中，然后在for循环中调用以读取一个数据文件。

代码段：

for (int z = 11; z < 33; z++) {
        const std::string filename_1 = "detection";

        int value = z;
        std::string filename_2;
        std::ostringstream convert;
        convert << value;
        filename_2 = convert.str();

        const std::string filename_3 = ".rat";

        const std::string my_file = filename_1 + filename_2 + filename_3;

        // Reading data from the .rat files of the detected signal.
        Reading(my_file, times_det, signal_det);

// Further calculations go here.

代码编译并执行，但在读出两个计算结果后，我返回错误：

./test
0.527679
0.639159
*** Error in `./test': double free or corruption (out): 0x0000000000f52a30 ***
Aborted (core dumped)

我是否在必要时清除记忆？使用.clear（）并没有消除这个问题。

感谢您的建议！

编辑：为了清晰起见，“阅读”功能：

void Reading(const std::string &filename, rarray<double,1> &times, rarray<std::complex<double>,1> &signal) {
    std::ifstream f(filename.c_str());
    // Read in the signal.
    f >> times;
    f >> signal;
}

Answer 1

@kam，我试图通过使用以下代码重现该问题，我怀疑它可能与您正在使用的rarray有关，但注释掉因为我没有库的详细信息正在使用。

#include <iostream>
#include <fstream>
#include <strstream>
#include <sstream>

using namespace std;

void Reading(const std::string &filename, /*rarray< */double /*,1> */ &times, /* rarray<std::complex< */ double /*>,1> */ &signal) {
    std::ifstream f(filename.c_str());
    // std::ifstream f;
    std::string ofile = "o_" + filename;
    std::ofstream o;

    //f.open(filename.c_str());
    o.open(ofile.c_str());

    // Read in the signal.
    f >> times;
    f >> signal;

    cout << "file open :" << f.is_open() << " ";
    cout << times << " " << signal << endl << flush;

    //o << "file open :" << f.is_open() << " ";
    o << times << " " << signal << endl << flush;

    //f.close();
    o.close();
}


int main(int argc, const char * argv[]) {
    const std::string filename_1 = "detection";
    const std::string filename_3 = ".rat";
    double times_det = 0.0, signal_det = 0.0;

    for (int z = 11; z < 33; z++) {
        int value = z;
        std::string filename_2;
        std::ostringstream convert;

        convert << value;
        filename_2 = convert.str();

        const std::string my_file = filename_1 + filename_2 + filename_3;

        // Reading data from the .rat files of the detected signal.
        Reading(my_file, times_det, signal_det);

        // Further calculations go here.
    }

    return 0;
}

在读取数据时使用for循环修改字符串名称

1 个答案: