void re(char *str, int len);?
void re2(char *str);

int main()?
{?
char str[1024] = “I am from ShangHai”;?
//char str[1024] = “a b c d e f”;

re(str, strlen(str)); printf("first : |%s|\n", str);re2(str); printf("second : |%s|\n", str);return 0;

}

void re(char *str, int len)?
{?
int i;?
for (i = 0; i < len / 2; i++)?
{?
char temp = str[i];?
str[i] = str[len - i - 1];?
str[len -i - 1] = temp;?
}?
}

void re2(char *str)?
{?
//find word?
//start index + word’s length?
int index = 0;?
int start = 0;?
int len = 0;

for (index = 0; index <= strlen(str); index++) {if (str[index] != ' ' && str[index] != '\0'){len++;}else{printf("start : %d len : %d\n", start, len);// do somethingre(str + start, len);start = start + len + 1;len = 0;} }

}

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