Stuff

#include <stdio.h>#include <stdlib.h>#include <string.h>#include <errno.h>#define MAX_FILES 50int openArrayFile( FILE** pFilesArray, const int index, const char* fileName, const char* openMode ){char* pHelloWorld = "Hello, World!\n";int rc = (index >= MAX_FILES ) ? -1 : 0;if( !rc ){pFilesArray[index] = fopen( fileName, openMode );if( !pFilesArray[index] ){rc = errno;}fwrite( pHelloWorld, strlen( pHelloWorld ), 1, pFilesArray[index] );}return rc;}int closeArrayFile( FILE** pFilesArray, const int index ){int rc = (index >= MAX_FILES ) ? -1 : 0;if( !rc ){if( !pFilesArray[index] ){rc = ERANGE;}else{rc = fclose( pFilesArray[index] );if( rc ){rc = errno;}else{pFilesArray[index] = 0;}}}return rc;}int main(){int rc = 0;int i = 0;char filenameBase[16] = {0};FILE** pFilesArray = (FILE**)calloc( sizeof( FILE*), MAX_FILES );if( pFilesArray != NULL ){for( i = 1; i < 1+ MAX_FILES; i++ ){if( i > 999 ){rc = ERANGE;break;}else if( i < 10 ){sprintf( filenameBase, "result00%d", i );}else if( i < 100 ){sprintf( filenameBase, "result0%d", i );}else{sprintf( filenameBase, "result%d", i );}rc = openArrayFile( pFilesArray, -1 + i, filenameBase, "w" );if( rc ){break;}else{rc = closeArrayFile( pFilesArray, -1 + i );if( rc ){break;}}}free( pFilesArray );}else{rc = errno;}return rc;}