//Declaration: char *strncat(char *str1, const char *str2, size_t count);
//Return: returns *str1.
#include
#include
int main(void)
{
char s1[80], s2[80];
unsigned int len;
gets(s1);
gets(s2);
len = 79-strlen(s2);
strncat(s2, s1, len);
printf(s2);
return 0;
}
/*
2
1
12*/