| char *strcpy(char *dest, char *src) | |
| /*@ With src_str | |
| Require valid_string(src_str) && | |
| string_length(src_str) < INT_MAX && | |
| CharArray::undef_full(dest, string_length(src_str) + 1) * | |
| store_string(src, src_str) | |
| Ensure __return == dest && | |
| store_string(dest, src_str) * store_string(src, src_str) | |
| */ | |
| { | |
| int i = 0; | |
| while (src[i] != 0) { | |
| dest[i] = src[i]; | |
| i++; | |
| } | |
| dest[i] = 0; | |
| return dest; | |
| } | |
| char *strncpy(char *dest, char *src, int n) | |
| /*@ With src_str | |
| Require valid_string(src_str) && | |
| 0 <= n && n < INT_MAX && | |
| CharArray::undef_full(dest, n) * | |
| store_string(src, src_str) | |
| Ensure exists out, | |
| strncpy_content(src_str, n, out) && | |
| __return == dest && | |
| CharArray::full(dest, n, out) * store_string(src, src_str) | |
| */ | |
| { | |
| int i = 0; | |
| while (i < n && src[i] != 0) { | |
| dest[i] = src[i]; | |
| i++; | |
| } | |
| while (i < n) { | |
| dest[i] = 0; | |
| i++; | |
| } | |
| return dest; | |
| } | |