The contents of a character array are: "Student a Am I", please change the contents of the array to "I am a student".

#include  <stdio.h> #include  <assert.h>int length (const char *str) {    int len=0;  assert (str);   while (*STR)   {        len++;       str++;  }  return  len;} Void reverse_str (char *start,char *end) {  while (start<end)   {                 char tmp=*start ;                *start=*end;                 *end=tmp;                 start++;                 end--;  }} Char *reverse(CHAR&NBSP;*STR) {  int n=length (str);   char *ret=str;  //first saves the starting position in the RET   char  *start=str;  char *end=str+n-1;  reverse_str (Start,end);   while (*STR)   {     start=str;    while (*str!= '   '  ) & & (*str!= '))                  {                   str++;                }                 end=str-1; &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;REVERSE_STR ( Start,end);                  iF (*str== '   '  )                  {                   str++;                 }  }  return ret;} Int main () {        char str[]= "student a am i " ;        printf ( "%s\n ", reverse (str));         system (  "pause");   return 0;}

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The contents of a character array are: "Student a Am I", please change the contents of the array to "I am a student".