我从以下代码的第二行收到段错误：
FILE *output = NULL;
output = fopen("./output2.txt", "w+");
我不认为这是某种损坏的内存错误，因为当我将 w+ 更改为 r 时。它运行时没有段错误。另外，它似乎是在出现段错误之前创建该文件。
编辑：事实证明 mrbatch 是对的
我所有的代码供参考：
void writeFile(const char *header, int numRows, int numCols, int **grades, const char *outFile)
{
printf("writefile success\n");
int i, j;
FILE *output = NULL;
output = fopen("./output2.txt", "w+"); // ERROR HERE (I was wrong, keep reading)
printf("testestestsetsete\n\n\n"); //based off the commenters, this code
//IS reached but is never printed
fprintf(output, "%s", *header); //commenters stated error is here
//*header should be header
fprintf(output, "%d %d\n", numRows, numCols); //output the number or rows and columns at the second line
//output each grades(scores) in the processed 2D array grades
for(i = 0; i < numRows; i ++ ) { //loop through all rows
for( j = 0; j < numCols; j ++ ) //loop through all columns in the i row
{
if( j < numCols - 1 )
fprintf(output, "%d ", grades[i][j]);
else
fprintf(output, "%d\n", grades[i][j]);
//printf("\"%d\" ", score);
}
//printf("\n");
}
fclose(output);
}
