vi I have a function that will read a file of numbers and place them into an arr

Question

vi
I have a function that will read a file of numbers and place them into an array. I need to create a new function that will, given that stored array, output the array to a new file.

This is the code I have:


int Save_File(char *Filename, long *Array, int Size) {
FILE *fp = fopen(Filename, "wb");
if (fp == NULL) { // check to see if file opens; if NULL, failed
printf("Error opening file. ");
return 0;
}

if (fwrite(&Array, sizeof(int), Size, fp) != Size) {
printf("File write error.");
}

fclose(fp);
return (Size);
}

--

Right now, it does not work. When I check the output file, there is one line that displays "^B^Zˆ^B^WF

Explanation / Answer

The problem was, you were trying to output longs to the file, and expected to read them as characters. This should do it for you: int Save_File(char *Filename, long *Array, int Size) { if (fp == NULL) { // check to see if file opens; if NULL, failed } }

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