File Operation in C

Below is a simple C program to perform file operation –

include <stdlib.h>

main() {

FILE * file_source

char * file_name = (char*) malloc (sizeof (char)* 13);

char * file_content= (char*) malloc (sizeof (char)* 100);

printf("Enter File Name>");

gets (file_name);

file_source = fopen(file_name, "r+");

if(file_source == NULL) {

printf("File doesn't exist");

}

else{

while ( fgets (file_content, 100, file_source) != NULL){

printf("%s",file_content);

}

fclose(file_source);

}

}