www.pudn.com > 文件恢复及修补 C 语言源程序.zip > CAT.C

 
  /* (This program is from p. 154 of the Kernighan and Ritchie text */ 
#include  
 
main(argc, argv)        /* cat: concatenate files */ 
int argc; 
char *argv[]; 
{ 
    FILE *fp, *fopen(); 
 
    if (argc == 1) /* no args; copy standard input */ 
         filecopy(stdin); 
    else 
         while (--argc > 0) 
            if ((fp = fopen(*++argv, "r")) == NULL) { 
                fprintf(stderr, 
                        "cat: can't open %s\n", *argv); 
                exit(1); 
            } else { 
                filecopy(fp); 
                fclose(fp); 
            } 
    exit(0); 
} 
 
filecopy(fp)    /* copy file fp to standard output */ 
FILE *fp; 
{ 
    int c; 
 
    while ((c = getc(fp)) != EOF) 
        putc(c, stdout); 
}