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目的我的程序的简单,从文件中读取INT数字序列,这里的代码:传递一个未初始化的数组的函数用C
int main()
{
FILE *file = fopen("test.txt", "r");
int *array = NULL; // Declaration of pointer to future array;
int count;
process_file(file, array, &count);
return 0;
}
// Function returns 'zero' if everything goes successful plus array and count of elements as arguments
int process_file(FILE *file, int *arr, int *count)
{
int a;
int i;
*count = 0;
// Function counts elements of sequence
while (fscanf(file, "%d", &a) == 1)
{
*count += 1;
}
arr = (int*) malloc(*count * sizeof(int)); // Here program allocates some memory for array
rewind(file);
i = 0;
while (fscanf(file, "%d", &a) == 1)
{
arr[i] = a;
i++;
}
fclose(file);
return 0;
}
问题是,在外部函数(主),阵列没有改变。 它怎么能被修复?
不应该是“* array = malloc(* count * sizeof ** array);”? –
谢谢,它适用于一些调整:在函数中为数组的元素赋值,需要使它像这样(* array)[i] = value – JacobLutin