Help me in solving CLB041 problem

My issue

all codes are right but still not showing output

My code

#include <stdio.h>
#include <string.h>

int main() {
	char txt[] = "NumeroTres";
	printf("The lenght of the word is: %d", strlen(txt));
	return 0;

Learning course: Learn C
Problem Link: CodeChef: Practical coding for everyone

The spelling of length is not right.