C program to read file contents and count bytes using feof API

The function feof() tests the end-of-file indicator for the stream pointed to by stream, returning nonzero if it is set. The end-of-file indicator can be cleared only by the function clearerr().

 $ vim read_file_till_end_of_file_detected.c 
[bash] #include <stdlib.h> int main(int argc, char **argv) { int count, total = 0; char buffer[100]; FILE *stream; if((stream = fopen(argv[1], "r" )) == NULL ) exit( 1 ); /* Iterate till end of file reached: */ while(!feof(stream)) { /* Attempt to read in 100 bytes: */ count = fread(buffer, sizeof( char ), 100, stream); if(ferror(stream)) { perror("Read error"); break; } /* Total up actual bytes read */ total += count; } printf( "Number of bytes read = %d\n", total ); fclose( stream ); return 0; } [/bash]
 $ gcc -o read_file_till_end_of_file_detected read_file_till_end_of_file_detected.c 

Below command, reads read_file_till_end_of_file_detected.c till end of file is detected and counts the number of bytes and prints on console.

 $ ./read_file_till_end_of_file_detected  read_file_till_end_of_file_detected.c 
Number of bytes read = 550

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