Thread: Exchange contents from one text file to other

The code is working nice for me.


But feel free to give me advice.

Code:

#include <stdio.h>
#include <stdlib.h>
#define SIZE 100


int main(int argc, char** argv) {


    // Transfer the contents from on file to the other.
    FILE *pFileA;
    FILE *pFileB;
    FILE *pFileTemp;


    char buffer[SIZE];


    // Copy codeA to a temp file
    if ((pFileA = fopen("codeA.txt", "rt")) == NULL)
        return -1;


    if ((pFileTemp = fopen("temp.txt", "wt")) == NULL)
        return -1;


    while (fgets(buffer, sizeof (buffer), pFileA) != NULL)
        fprintf(pFileTemp, "%s", buffer);


    fclose(pFileA);
    fclose(pFileTemp);


    // Copy codeB to codeA
    if ((pFileA = fopen("codeA.txt", "wt")) == NULL)
        return -1;


    if ((pFileB = fopen("codeB.txt", "rt")) == NULL)
        return -1;


    while (fgets(buffer, sizeof (buffer), pFileB) != NULL)
        fprintf(pFileA, "%s", buffer);


    fclose(pFileA);
    fclose(pFileB);


    // Copy tempFile to codeB
    if ((pFileTemp = fopen("temp.txt", "rt")) == NULL)
        return -1;


    if ((pFileB = fopen("codeB.txt", "wt")) == NULL)
        return -1;


    while (fgets(buffer, sizeof (buffer), pFileTemp) != NULL)
        fprintf(pFileB, "%s", buffer);


    fclose(pFileTemp);
    fclose(pFileB);


    // Remove temp
    remove("temp.txt");


    return (EXIT_SUCCESS);
}