题解 | 字符串反转

#include <stdio.h>
#include <string.h>

void swap(char *a,char *b){
    char temp ;
    temp = *a;
    *a = *b;
    *b = temp;
}
void reverse(char *s,int start,int end){
    int i,j;
    i = start;j = end;
    while(i < j){
        swap(&s[i],&s[j]);
        i++;j--;
    }
}
int main() {
   char s[1200];int i;
   fgets(s,sizeof(s),stdin);
   int len = strlen(s);
   
   reverse(s, 0 ,len - 2);
   for(i = 0;i < len - 1;i++){
    printf("%c",s[i]);
   }
   
    return 0;
}