Reverse order of strings in c language

String reverse

#include <stdio.h>
#include <string.h>
int main()
{
    
    
	char str[] = "hello,world";
	int len = strlen(str);
	char t;
	int i = 0;
	for(i = 0;i < len/2;i++)
	{
    
    
		t = str[i];
		str[i] = str[len - i - 1];
		str[len - i - 1] = t;
	}

	printf("%s\n",str);



	return 0;
}