Reverse words in a string, reversewords

Reverse words in a string, reversewords

I just saw this question. It's quite interesting...

#include <stdio.h>int main(){    char str[] = "Please reverse this string!";    printf("%s\n", str);    str_rev(str);    printf("%s\n", str);    return 0;}int str_rev(char *string){    if(!string)    {        return 0;    }    int ins_pos = 0;    int ch = 0;    int swap_time = 0;    int i = 0;    int j = 0;    int counter = 0;    int word    = 0;    for(i = 0, word = 1; string[i] != '\0'; i++)    {        if(string[i] == ' ')        {            word++;        }    }    counter = i;    for(j = 0, swap_time = 0, ins_pos = 0, ch = 0;        j < word - 1;        j++)    {        for(swap_time = 0; string[counter-1] != ' ';)        {            ch = string[counter-1];            for(i = counter - 1; i > ins_pos; i--)            {                string[i] = string[i-1];            }            string[ins_pos] = ch;            swap_time++;        }        ins_pos += swap_time;        ch = string[counter-1];        for(i = counter - 1; i > ins_pos; i--)        {        string[i] = string[i-1];        }        string[ins_pos] = ch;        ins_pos++;    }    return 0;}

My idea is to "subscribe" the words one by one. Put the last word into the starting position of "unreplayed string" by each letter iteratively (marked by ins_pos)