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我有一個項目爲一個療程，我做了幾乎所有的東西，但我有這個錯誤，我不知道是誰去解決它......字符錯誤C的langauge
這樣做我們自己的殼他們中的一些，我們有項目寫我們的代碼，其他人我們會用叉子方法..
這是代碼，
#include <sys/wait.h>
#include <dirent.h>
#include <limits.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include<stdio.h>
#include<fcntl.h>
#include<unistd.h>
#include<sys/stat.h>
#include<sys/types.h>
int main(int argc, char **argv)
{
pid_t pid;
char str[21], *arg[10];
int x,status,number;
system("clear");
while(1)
{
printf("Rshell>");
fgets(str,21,stdin);
x = 0;
arg[x] = strtok(str, " \n\t");
while(arg[x])
arg[++x] = strtok(NULL, " \n\t");
if(NULL!=arg[0])
{
if(strcasecmp(arg[0],"cat")==0) //done
{
int f=0,n;
char l[1];
struct stat s;
if(x!=2)
{
printf("Mismatch argument\n");
}
/*if(access(arg[1],F_OK))
{
printf("File Exist");
exit(1);
}
if(stat(arg[1],&s)<0)
{
printf("Stat ERROR");
exit(1);
}
if(S_ISREG(s.st_mode)<0)
{
printf("Not a Regular FILE");
exit(1);
}
if(geteuid()==s.st_uid)
if(s.st_mode & S_IRUSR)
f=1;
else if(getegid()==s.st_gid)
if(s.st_mode & S_IRGRP)
f=1;
else if(s.st_mode & S_IROTH)
f=1;
if(!f)
{
printf("Permission denied");
exit(1);
}*/
f=open(arg[1],O_RDONLY);
while((n=read(f,l,1))>0)
write(1,l,n);
}
else if(strcasecmp(arg[0],"rm")==0) //done
{
if(unlink(arg[1]) != 0)
perror("Error deleting file");
else
puts("File successfully deleted");
}
else if(strcasecmp(arg[0],"rmdir")==0) //done
{
if(remove(arg[1]) != 0)
perror("Error deleting Directory");
else
puts("Directory successfully deleted");
}
else if(strcasecmp(arg[0],"ls")==0) //done
{
DIR *dir;
struct dirent *dirent;
char *where = NULL;
//printf("x== %i\n",x);
//printf("x== %s\n",arg[1]);
//printf("x== %i\n",get_current_dir_name());
if (x == 1)
where = get_current_dir_name();
else where = arg[1];
if (NULL == (dir = opendir(where))) {
fprintf(stderr,"%d (%s) opendir %s failed\n", errno, strerror(errno), where);
return 2;
}
while (NULL != (dirent = readdir(dir))) {
printf("%s\n", dirent->d_name);
}
closedir(dir);
}
else if(strcasecmp(arg[0],"cp")==0) //not yet for Raed
{
FILE *from, *to;
char ch;
if(argc!=3) {
printf("Usage: copy <source> <destination>\n");
exit(1);
}
/* open source file */
if((from = fopen(argv[1], "rb"))==NULL) {
printf("Cannot open source file.\n");
exit(1);
}
/* open destination file */
if((to = fopen(argv[2], "wb"))==NULL) {
printf("Cannot open destination file.\n");
exit(1);
}
/* copy the file */
while(!feof(from)) {
ch = fgetc(from);
if(ferror(from))
{
printf("Error reading source file.\n");
exit(1);
}
if(!feof(from)) fputc(ch, to);
if(ferror(to)) {
printf("Error writing destination file.\n");
exit(1);
}
}
if(fclose(from)==EOF) {
printf("Error closing source file.\n");
exit(1);
}
if(fclose(to)==EOF) {
printf("Error closing destination file.\n");
exit(1);
}
}
else if(strcasecmp(arg[0],"mv")==0)//done
{
if(rename(arg[1],arg[2]) != 0)
perror("Error moving file");
else
puts("File successfully moved");
}
else if(strcasecmp(arg[0],"hi")==0)//done
{
printf("hello\n");
}
else if(strcasecmp(arg[0],"exit")==0) // done
{
return 0;
}
else if(strcasecmp(arg[0],"sleep")==0) // done
{
if(x==1)
printf("plz enter the # seconds to sleep\n");
else
sleep(atoi(arg[1]));
}
else if(strcmp(arg[0],"history")==0) // not done
{
FILE *infile;
//char fname[40];
char line[100];
int lcount;
///* Read in the filename */
//printf("Enter the name of a ascii file: ");
//fgets(History.txt, sizeof(fname), stdin);
/* Open the file. If NULL is returned there was an error */
if((infile = fopen("History.txt", "r")) == NULL)
{
printf("Error Opening File.\n");
exit(1);
}
while(fgets(line, sizeof(line), infile) != NULL) {
/* Get each line from the infile */
lcount++;
/* print the line number and data */
printf("Line %d: %s", lcount, line);
}
fclose(infile); /* Close the file */
writeHistory(arg);
//write to txt file every new executed command
//read from the file once the history command been called
//if a command called not for the first time then just replace it to the end of the file
}
else if(strncmp(arg[0],"@",1)==0) // not done
{
//scripting files
// read from the file command by command and executing them
}
else if(strcmp(arg[0],"type")==0) //not done
{
//if(x==1)
//printf("plz enter the argument\n");
//else
//type((arg[1]));
}
else
{
pid = fork();
if (pid == 0)
{
execlp(arg[0], arg[0], arg[1], arg[2], NULL);
printf ("EXEC Failed\n");
}
else
{
wait(&status);
if(strcmp(arg[0],"clear")!=0)
{
printf("status %04X\n",status);
if(WIFEXITED(status))
printf("Normal termination, exit code %d\n", WEXITSTATUS(status));
else
printf("Abnormal termination\n");
}
}
}
}
}
}
void writeHistory(char *arg[])
{
FILE *file;
file = fopen("History.txt","a+"); /* apend file (add text to
a file or create a file if it does not exist.*/
int i =0;
while(strcasecmp(arg[0],NULL)==0)
{
fprintf(file,"%s ",arg[i]); /*writes*/
}
fprintf(file,"\n"); /*new line*/
fclose(file); /*done!*/
getchar(); /* pause and wait for key */
//return 0;
}
的事情是，當我編譯代碼，這是什麼給了我
/home/ugics/st255375/ICS431Labs/Project/Rshell.c: At top level:
/home/ugics/st255375/ICS431Labs/Project/Rshell.c:264: warning: conflicting types for ‘writeHistory’
/home/ugics/st255375/ICS431Labs/Project/Rshell.c:217: note: previous implicit declaration of ‘writeHistory’ was here
任何一個能幫助我嗎？
感謝
前只需添加
能否請您格式化一個可讀的方式代碼？ – mariosangiorgio 2010-05-29 20:26:46
此外，請儘量刪除代碼的不相關部分，尤其是註釋掉的部分，這只是把空間，使其更難以瞭解你的代碼和重點問題。只發布仍然會再現問題的最小代碼量。這會增加您獲得幫助的機會:-) – 2010-05-29 20:40:17
與您的問題無關;錯誤消息如果包含文件名則更好。例如，代替 'PERROR（ 「錯誤刪除文件」）;'，嘗試 'PERROR（ARG [1]）' 或「fprintf中（錯誤， 「錯誤刪除％S：％S」，則arg [1]，字符串錯誤（錯誤））;」 – 2010-05-30 13:58:30