#include <stdlib.h>#include <string.h>#include <stdio.h> main(int argc, char **argv){ char *f, *s; if(argc != 2){ fprintf(stderr, "Usage: dirname string\n"); exit(1); } s = argv[1]; f = s + strlen(s) - 1; while(f > s && *f == '/') f--; *++f = 0; /* now f is after last char of string, trailing slashes removed */ for(; f >= s; f--) if(*f == '/'){ f++; break; } if(f < s) { *s = '.'; s[1] = 0; } else { --f; while(f > s && *f == '/') f--; f[1] = 0; } printf("%s\n", s); return 0;}
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
main(int argc, char **argv)
{
char *f, *s;
if(argc != 2){
fprintf(stderr, "Usage: dirname string\n");
exit(1);
}
s = argv[1];
f = s + strlen(s) - 1;
while(f > s && *f == '/')
f--;
*++f = 0;
/* now f is after last char of string, trailing slashes removed */
for(; f >= s; f--)
if(*f == '/'){
f++;
break;
}
if(f < s) {
*s = '.';
s[1] = 0;
} else {
--f;
while(f > s && *f == '/')
f--;
f[1] = 0;
}
printf("%s\n", s);
return 0;
}