赋值使 integer 从没有强制转换的指针 [-Wint-conversion] 在 C

Question

I want to read data in a file into 2d array, but in (array[i][j] = #) line this problem occurs

void readmatrix(int **array,FILE * f,int row,int col){
    for(int i=0 ;i<row ;i++){
        for(int j=0 ;j<col;j++){
            int* num = NULL;
            fscanf(f, "%d",num);
            array[i][j] =  &num ;
        }
    }
}

Answer 1

You are passing pointer of pointer of int to the function and saving address of pointer of num into array. Below will work just cast the array into (int *) before invoke your function.

void readmatrix(int *array,FILE * f,int row,int col){
    for(int i = 0; i < row * col; i++){
        int num;
        fscanf(f, "%d", &num);
        *(array + i) =  num ;
    }
}