求解字符串逆置怎修改

Question

#include <stdio.h>
void reverse(char *p1){
    char *p2;
    int i=0;
    p2=p1;
    while(p1[i]!='\0')
        i++;
    int k=i;
    for(int n=0;n<k;n++)
        {
        p2[n]=p1[i];
        i--;}
    *p2='\0';


}
int main()
{
        char s[100]="ssaaascs";
        reverse(s);
        printf("%s",s);
        return 0;
}

Answer 1

按题主的代码和思路修改如下，供参考：

#include <stdio.h>
void reverse(char* p1) {
    char* p2;
    int  i = 0;
    p2 = p1;
    while (p1[i] != '\0')
        i++;
    int k = i--;
    for (int n = 0; n < i; i--, n++)
    {
        char t= p2[n];
        p2[n] = p1[i];
        p1[i] = t;
    }
    p2[k] = '\0';
}
int main()
{
    char s[100] = "ssaaascs";
    reverse(s);
    printf("%s", s);
    return 0;
}