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Generate random number


#include <stdlib.h>
int rand (void)


Rand function returns a pseudorandom number. The algorithm used in rand function uses a seed to generate the series, which should be initialized to some distinctive value using srand.

Generate Random Number

#include <cstdlib> 
#include <ctime> 
#include <iostream>
using namespace std;
int main() 
    int random_integer; 
    for(int index=0; index<20; index++){ 
        random_integer = (rand()%10)+1; 
        cout << random_integer << endl; 

Output: This example of program will output 20 random numbers from 1 to 10.

Return Values

The rand function returns a pseudo-random integral number between 0 and RAND_MAX (where RAND_MAX is a constant defined in <cstdlib>).

There is no error return.