What is the output? (Explain)

Question

/*
Can someone give me a better solution and explain me how to get the output for this source code?
*/
#include <stdio.h>
#include <string.h>
char *f(int p, char *s) {
s[p+2] = '\0';
return s-1;
}
int main(void) {
char s[] = "ABCDEF";
int i = strlen(f(1, s+2));
printf("%d\n", i);
return 0;
}

Answer 1

Go into the Code section of SoloLearn, press the "+" icon to add new code, select C language, then enter your code and run. There you can see the output and experiment to understand it better.