How to Generate Random Numbers in C using rand() and srand() Function

Program 1

#include<stdio.h>
#include<conio.h>
#include<time.h>
int main()
{
     int n,i,l,u;
     system("cls");
     srand(time(NULL));
     printf("Enter lower value of Random Number");
     scanf("%d",&l);
     printf("Enter upper value of Random Number");
     scanf("%d",&u);
     for(i=1;i<=5;i++)
     {
        n=(rand() %(u-l+1)) + l;
        printf("%5d",n);  
     }
     
     return 0;
}