- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
char chars[] = "hello, world";
charReverse(chars);
NSLog(@"%s", chars);
}
void charReverse(char* chars){
char* begin = chars;
char* end = chars + strlen(chars) - 1;
while (begin<end) {
char temp = *begin;
*(begin++) = *end;
*(end--) = temp;
}
}













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