利用指针实现strncmp函数功能
#include
#include
int mstrncmp( char *s1, char *s2, size_t n) {
while(*s1 && *s2 && (*s1 = *s2) && (n--)) {
s1++; s2++; } #if 1 if((*s1 - *s2) > 0) return 1; else if((*s1 - *s2) < 0) return -1; else return 0; #else return *s1 - *s2; #endif } int main(int argc, const char *argv[]) {
char str1[] = {
"sjkab"}; char str2[] = {
"ajbhfjkabh"}; printf("mstrcmp: %d\n", mstrncmp(str1, str2, 0)); printf("strcmp: %d\n", strncmp(str1, str2, 0)); return 0; }
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