#include <stdio.h>
#include <stdbool.h>
#include <assert.h>
bool is_equal1(char str1[], char str2[])
{
for(int i=0; ; i++) {
if(str1[i] != str2[i])
return false;
if(!str1[i] && !str2[i])
return true;
}
}
bool is_equal2(const char *str1, const char *str2)
{
while(1) {
if(*str1 != *str2)
return false;
if(!*str1 && !*str2)
return true;
str1++;
str2++;
}
}
int main()
{
assert(is_equal1("", ""));
assert(is_equal1("asdf", "asdf"));
assert(!is_equal1("", "asdf"));
assert(!is_equal1("asd", "asdf"));
assert(!is_equal1("asdf", ""));
assert(!is_equal1("asdf", "asd"));
assert(is_equal2("", ""));
assert(is_equal2("asdf", "asdf"));
assert(!is_equal2("", "asdf"));
assert(!is_equal2("asd", "asdf"));
assert(!is_equal2("asdf", ""));
assert(!is_equal2("asdf", "asd"));
printf("Pass");
}
