Hi I'm doing a C programming assignment on Ubuntu server. The goal is to write a program that copies the contents of a file exactly.

This is what I have. I am getting a segmentation fault when I try to run. Any advice?

#include #include #include #include #include

int error(char* msg) { perror(msg); return 2; }

int usage(char* name) { printf("Usage: %s ", name); return 1; } int main(int argc, char* argv[]) { if (argc != 3) return usage(argv[0]); // open files // read bytes from original file and // write to copy FILE *fr = fopen(argv[1], "r"); if(!fr) { error("file to copy does not exists"); } else { FILE *temp = fopen(argv[2], "r"); if(temp) { error("name of copy already exists"); } else { fclose(temp); FILE *fw = fopen(argv[2], "w"); if(fw) { char ch = 0; while((ch = getc(fr)) != EOF) { putc(ch, fw); } fclose(fw); } else { error("can not write to name of copy"); } } fclose(fr); } // close files return 0; }

1. The usage of mycopy is as follows: mycopy 2. If the file to be copied does not exist or the user lacks permission to read it, mycopy emits an error message and quits 3. If a file or directory already exists with the name proposed for the copy, mycopy emits an error and terminates. 4. You are to write code within the main function of the file mycopy.c, which is supplied with this assignment. thoupid with tnis asgsment. You may also add your own functions, if you wish. 1. The usage of mycopy is as follows: mycopy 2. If the file to be copied does not exist or the user lacks permission to read it, mycopy emits an error message and quits 3. If a file or directory already exists with the name proposed for the copy, mycopy emits an error and terminates. 4. You are to write code within the main function of the file mycopy.c, which is supplied with this assignment. thoupid with tnis asgsment. You may also add your own functions, if you wish