c语言用字符数组和字符指针删除相同字符

如何用字符数组和字符指针做参数删除与某字符相同的字符

1.用字符数组

char *DelLetter1(char str1[],char a)   //用字符数组删除{int i = 0;int c = 0;char *b = (char*)malloc((strlen(str1))*sizeof(char));   //定义动态数组for (i = 0; i < (strlen(str1)+1); i++){if (str1[i]!=a)                      //把不是指定字符的元素复制进入新的数组{b[c] = str1[i];   c++;}else {continue; }}return b;                                       //返回新的数组}

2.用字符指针

char *DelLetter2(char str1[], char a){char *c = str1;char *e = (char*)malloc((strlen(str1)) * sizeof(char));         //定义动态数组char *f = e;                                                 //记录新的指针开始值while (*c != '\0'){if (*c != a)//复制进入新的数组{*e = *c;e++;}c++;}return f;                    //返回开始地址}