Function that receives a string as a parameter and returns the length of that string

Question

I try to create a function to return the length of the string but somehow it doesn't work! '
could you please help me check it?
Here is the code :
#include <stdio.h>
int my_strlen(char *s){
int length =0;
while(*s !='\0'){
s++;
length ++;
}
return x;
}
int main()
{
printf("------------------------\n");
my_strlen("abcd") ;
}

Answer 1

As Angelo said, x is not declared, but you also are not printing the value returned by my_strlen.
And if you want you can use a more concise for loop instead of the while.
https://code.sololearn.com/cdHTM971xk10/?ref=app

Answer 2

You haven't defined x
You probably meant:
return length;

Answer 3

#include <stdio.h>
#include <string.h>
int my_strlen(char *s){
int length = 0;
while(*s++)
length++;
return length;
}
int main()
{
printf("%d", my_strlen("abcd"));
return 0;
}
// or
int my_strlen(char *s){
int i=0;
for(; *s++; i++);
return i;