File Copy Homework, 4 november, 2010

by **BIT0102-Mohaimin** Thu Nov 04, 2010 1:59 pm

This is the copy homework which is supposed to submitted today.
Its in C.

Code:: #include <fcntl.h> #include <stdio.h> #include <errno.h> #include <ctype.h> int main(int args, char* arg[]){ if (args < 4){ puts("To few arguments"); return args; }else if(args > 4){ puts("To many arguments"); return args; } char buffer[1024]; size_t nbytes = atoi(arg[3]); ssize_t readByte, writeByte; int writeFile,readFile; readFile = open(arg[1], O_RDONLY); if(errno!=0){ printf("Exit with error code %d\n", errno); printf("\tCould not open file %s\n", arg[1]); return errno; } readByte = read(readFile, buffer, nbytes); if(errno!=0){ printf("Exit with error code %d\n", errno); printf("\tCould not read file %s\n", arg[1]); close(readFile); return errno; } if(readByte==-1){ printf("Exit with error code %d\n", readByte); printf("Nothing to read\n"); close(readFile); return errno; } writeFile = open(arg[2], O_RDWR | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR); if(errno!=0){ printf("Exit with error code %d\n", errno); printf("\tCould not open file: %s\n", arg[2]); return errno; } writeByte = write(writeFile, buffer, nbytes); if(errno!=0){ printf("Exit with error code %d\n", errno); printf("\tCould not write to file: %s\n", arg[2]); close(writeFile); return errno; } if(writeByte==-1){ printf("Exit with error code %d\n", writeByte); printf("\tNothing to write\n"); close(writeFile); return errno; } close(readFile); close(writeFile); return 0; }