以下与库函数strcpy(char *s1, char *s2)功能不相等的函数是( )。(2分) Afuna(char *s1, char *s2) {while (*s1++=*s2++);} Bfunb(char *s1, char *s2) {while (*s2) s1++=s2++;} Cfunc(char *s1, char *s2) {while (*s1=*s2) {s1++;s2++;}} Dfund(char *s1, char *s2) {while ((*s1++=*s2++)!=’\0’); }
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