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- /*
- ** STRDEL.C - Removes specified characters from a string
- **
- ** public domain demo by Bob Stout
- */
-
- #include <stdio.h>
- #include <string.h>
-
- char *strdel(char *string, size_t first, size_t len)
- {
- char *pos0, *pos1;
-
- if (string)
- {
- if (first < strlen(string))
- {
- for (pos0 = pos1 = string + first;
- *pos1 && len;
- ++pos1, --len)
- {
- ;
- }
- strcpy(pos0, pos1);
- }
- }
- return string;
- }
-
- #ifdef TEST
-
- main(int argc, char *argv[])
- {
- int pos, len;
-
- if (4 > argc)
- {
- puts("Usage: STRDEL string pos len");
- puts("Deletes 'len' characters starting at position 'pos'");
- return -1;
- }
- pos = atoi(argv[2]);
- len = atoi(argv[3]);
- printf("strdel(\"%s\", %d, %d) => ", argv[1], pos, len);
- printf("\"%s\"\n", strdel(argv[1], pos, len));
- return 0;
- }
-
- #endif /* TEST */
-
-