why displays a bunch of errors under the condition of two incidents? почему выводит кучу ошибок при условии двух случаиностей?

Question

#include <iostream>
#include <cstdlib>
using namespace std;
int main () {
int d = srand ();
int c = srand ();
if (d < c) {
cout << c << d;
}
}

Answer 1

//Try this 👇
#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;
int main () {
srand(time(0));
int d = rand();
int c = rand();
if (d < c) {
cout << c << "\n" << d;
}
}

/*
The srand() function sets the starting point for producing a series of pseudo-random integers

Standard practice is to use the result of a call to srand(time(0)) as the seed. 

rand() function is used in C++ to generate random numbers

Without srand() the same sequence of random will be generated ...

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*/