Question

c语言字符的替换

Answer 1

问：c语言字符的替换

答：c语言字符的替换您好亲，/* 功能:查找替换函数 返回值:替换后的字符串 strretu */char *Replace(char *str, char *str1, char *str2, char *strretu){ char *str_temp = str; //源字符串 char *str1_temp = str1; //要求替换的字符串 char *str2_temp = str2; //替换成字符串 char *strretu_temp = NULL;//目标字符串 unsigned long char_size = (unsigned long)sizeof(char); /*计算字符长度*/ unsigned long i,j,rep_acc = 0; unsigned long str_len = strlen(str); unsigned long str1_len = strlen(str1); unsigned long str2_len = strlen(str2); /*首先找出Str里有几个地方要被替换的*/ for(; str_temp - str < str_len; ) { for(i = 0; i < str1_len; i++) { if(*str_temp++ != *str1_temp++) { str1_temp = str1; break; } else { if(i == str1_len - 1) { str1_temp = str1; rep_acc++;//找到了 } } } } str1_temp = str1; str_temp = str; /*分配所需内存*/ strretu = strretu_temp = malloc(((str_len - str1_len * rep_acc) + str2_len * rep_acc + 1) * char_size); /*替换*/ for(; str_temp - str < str_len; ) { for(i = 0; i < str1_len; i++) { *strretu_temp++ = *str_temp; if(*str_temp++ != *str1_temp++) { str1_temp = str1; break; }

问：第二问

答：您好亲，图片看不清哦，请您具体描述一下您的具体问题吗？这样才可以为您更好的解答哦。非常抱歉哦