c++ - 来自 hflip 的段错误

Question

出于某种原因，当我运行这段代码时出现段错误。它所做的是从输入中读取一个 PGM 文件并将其水平翻转。

这是我认为有问题的代码:

for (i = pixels.size()-1; i = 0; i--){ // this loop takes the final value of the original vector and puts it into the first spot in the new hflip vector, and continues onwards
    flippy.push_back(pixels[i]);
}

cout << "P2" << endl << numColumns << " " << numRows << endl << "255" << endl;
while (p < pixTotal){
    for (int z = 0; z < numRows; z++){
        cout << flippy[p] << " ";
    }
    cout << endl;
    p++;

}

Answer 1

你有

for (i = pixels.size()-1; i = 0; i--)

中间应该是

i>=0

不是

i=0