Answer:
#include<iostream>
#include<stdlib.h>
#include<time.h>
#include <algorithm>
using namespace std;
//main function program start from here
int main(){
//seed the rand() function
srand(time(NULL));
//initialization
int arr[20];
//generate the 20 random number
for(int i=0;i<20;i++){
arr[i]=rand()%1000; //store in array
}
sort(arr,arr+20); //sort the array by inbuilt function
cout<<"The sorted array is."<<endl;
//for display the each element in the array
for(int i=0;i<20;i++){
cout<<arr[i]<<endl;
}
}
Explanation:
Create the main function and declare the array with size 20.
Take a for loop and generate the random number 20 times. For generating a random number, use the function rand();
rand() function which defines in the library stdlib.h, generate the random number within the range.
for example:
rand() % 20: generate the number between 0 to 19 ( Exclude 20).
for generating the random number different for every time, then we have to use srand() function and time function which defines in time.h library.
After that, store the number in the array.
Finally, take another loop and print all elements one by one.
