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¶þ¡¢±à³Ì(www.cppentry.com)Ìâ 1¡¢²»Ê¹Óÿ⺯Êý£¬±àдº¯Êýint strcmp(char *source, char *dest) ÏàµÈ·µ»Ø0£¬²»µÈ·µ»Ø-1£» ´ð°¸£ºÒ»¡¢ int strcmp(char *source, char *dest) { assert((source!=NULL)&&(dest!=NULL)); int i,j; for(i=0; source[i]==dest[i]; i++) { if(source[i]=='\0' && dest[i]=='\0') return 0; else return -1; } }
´ð°¸£º¶þ¡¢ int strcmp(char *source, char *dest) { while ( (*source != '\0') && (*source == *dest)) { source++; dest++; } return ( (*source) - (*dest) ) -1 : 0; }
2¡¢ дһº¯Êýint fun(char *p)ÅжÏÒ»×Ö·û´®ÊÇ·ñΪ»ØÎÄ£¬ÊÇ·µ»Ø1£¬²»ÊÇ·µ»Ø0£¬³ö´í·µ»Ø-1 ´ð°¸£ºÒ»¡¢ int fun(char *p) { if(p==NULL) return -1; else { int length = 0; int i = 0; int judge = 1; length = strlen(p); for(i=0; i{ if(p[i]!=p[length-1-i]) judge = 0; break; } if(judge == 0) return 0; else return 1; } }
´ð°¸£º¶þ¡¢ int fun(char *p) { int len = strlen(p) - 1; char *q = p + len; if (!p) return -1; while (p < q) { if ((*p++) != (*q--)) return 0; } return 1; } |