| 0,0 → 1,111 |
|---|
| |
| #include "string.h" |
| |
| void* memset(void *mem, int c, unsigned size) |
| { |
| unsigned i; |
| |
| for ( i = 0; i < size; i++ ) |
| *((char *)mem+i) = (char) c; |
| |
| return NULL; |
| } |
| |
| |
| void* memcpy(void *dst, const void *src, unsigned size) |
| { |
| |
| unsigned i; |
| |
| for ( i = 0; i < size; i++) |
| *((char *)dst+i) = *((char *)src+i); |
| |
| return NULL; |
| } |
| |
| |
| void strcat(char strDest[], char strSource[]) |
| { |
| |
| int i, j; |
| |
| i = j = 0; |
| while (strDest[i] != '\0') |
| i++; |
| |
| while ((strDest[i++] = strSource[j++]) != '\0') |
| ; |
| } |
| |
| |
| int strcmp(const char* string1, const char* string2) |
| { |
| |
| while (1) |
| { |
| if (*string1<*string2) |
| return -1; |
| if (*string1>*string2) |
| return 1; |
| |
| if (*string1=='\0') |
| return 0; |
| |
| string1++; |
| string2++; |
| } |
| |
| } |
| |
| |
| void strcpy(char strDest[], const char strSource[]) |
| { |
| unsigned i; |
| |
| i = 0; |
| while ((strDest[i] = strSource[i]) != '\0') |
| i++; |
| |
| } |
| |
| |
| char* strncpy(char *strDest, const char *strSource, unsigned n) |
| { |
| unsigned i; |
| |
| if (! n ) |
| return strDest; |
| |
| i = 0; |
| while ((strDest[i] = strSource[i]) != '\0') |
| if ( (n-1) == i ) |
| break; |
| else |
| i++; |
| |
| return strDest; |
| } |
| |
| |
| int strlen(const char* string) |
| { |
| int i; |
| |
| i=0; |
| while (*string++) i++; |
| return i; |
| } |
| |
| |
| |
| char* strchr(const char* string, int c) |
| { |
| while (*string) |
| { |
| if (*string==c) |
| return (char*)string; |
| string++; |
| } |
| return (char*)0; |
| } |
| |