How to use 'try' and 'catch' keywords for exception handling in c++?

Question

An example will be appreciated.

Answer 1

tnx Oscar

Answer 2

What is the idea of saying srand(time(0))

Answer 3

#include <iostream>
#include <stdlib.h>
#include <time.h>

using namespace std;

int main() {

srand(time(0));

bool areYouGay = rand()%2;

try{
throw areYouGay;
}
catch(bool yes)
{
if (yes)
cout << "You're gay";
else
cout << "You're not gay";
}
return 0;
}

You can see more here

http://www.cplusplus.com/doc/tutorial/exceptions/

Regards!

Answer 4

You're welcome :)

Answer 5

A random number generator requires a number(it is called seed) to generate random numbers . If the random number generator is given the same seed then every time it will generate the same sequence of random numbers . For example :-

If you run the program and it is generating random sequence 2,78,45,60 . If second time you run the program you will again get the same sequence 2,78,45,60.

srand function is used to change the seed of the random number generator.By setting srand(time(0)) , you are setting the seed of the random number generator to the current time.By doing this every time you run the program you will get different random sequences :-

For example for the first run if you are getting 2,78,45,60 . Next time you might get 5,3,6,80 (depending on the current time,as seed has been changed since the time has changed since the last run)

for more info refer these :-

http://www.cplusplus.com/reference/clibrary/cstdlib/rand/

http://www.cplusplus.com/reference/clibrary/cstdlib/srand/

http://www.cplusplus.com/reference/clibrary/ctime/time/

From Stackoverflow.