C 求字符串的长度和查找字符

来源：互联网发布：暴雪2017年新游戏知乎编辑：程序博客网时间：2024/05/23 14:34

#include <stdio.h>#include <stdlib.h>#include<time.h>#define TRUE 1#define FALSE 0int main(int argc, char *argv[]) {size_t myStrlen(char *string);int myFind_char(char *string, char value);int myFind2_char(char **strings, char value);char *str = "12345678aaa";printf("%d\n",myStrlen(str));char * str2 = "a123456789";printf("%d\n",myFind_char(str2,'0'));char  *str3[] = {"123","456","789",NULL};printf("%d\n",myFind2_char(str3,'a'));return 0;} /* **求字符串的长度  */size_t myStrlen(char * string){int length = 0;while(*string++ != '\0'){length +=1;}return length; }   /* **在字符串中查找字符  */ int myFind_char(char *string, char value) { if(string != NULL){   while(*string != '\0'){ if(*string++ == value){ return TRUE; }   }  }   return FALSE; } /* **在一组字符串中查找字符  */ int myFind2_char(char **strings, char value) { char *string; while((string = *strings++) != NULL) { while(*string != '\0') { if(*string++ == value) { return TRUE; } } } return FALSE; }

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