C examples for File:File Operation
Copying a file.
#include <stdio.h> int file_copy( char *oldname, char *newname ); int main( void ) { char source[80], destination[80]; printf("\nEnter source file: "); gets_s(source);//from w ww. jav a 2 s.c o m printf("\nEnter destination file: "); gets_s(destination); if ( file_copy( source, destination ) == 0 ) puts("Copy operation successful"); else fprintf(stderr, "Error during copy operation"); return(0); } int file_copy( char *oldname, char *newname ) { FILE *fold, *fnew; int c; /* Open the source file for reading in binary mode. */ if ( ( fold = fopen( oldname, "rb" ) ) == NULL ) return -1; /* Open the destination file for writing in binary mode. */ if ( ( fnew = fopen( newname, "wb" ) ) == NULL ) { fclose ( fold ); return -1; } while (1) { c = fgetc( fold ); if ( !feof( fold ) ) fputc( c, fnew ); else break; } fclose ( fnew ); fclose ( fold ); return 0; }