The following program erases the file specified on the command line.

#include <stdio.h>

#include <stdlib.h>

#include <ctype.h>

int main(int argc, char *argv[])

{

char str[80];

if(argc!=2) {

printf(''usage: xerase <filename>\n");

exit(1);

}

printf("Erase %s? (Y/N): ", argv[1]);

gets(str);

if(toupper(*str)=='Y')

if(remove(argv[1])) {

printf("Cannot erase file.\n");

exit(1);

}

return 0;

}