Hi NL please ȋ̝̊ need solutions to these questions;
1. Using the if-else statement, write a prog to find whether the number is even or odd.
2. Write a prog to find the square of the first natural numbers using the loop.
3.Write a program to print the first 100 prime numbers. Using cin & cout.
4. Write a program to produce the first 100 fibonacci numbers.
5. The factorial of an integer n, written n!, is the product of the consecutive integers 1 through n. For example 5 factorial is calculated as 5!= 5*4*3*2*1=120 write a program to generate and print a table of the first 10 factorials.4. Produce a table showing values of x the square of x and the cube of x for values of x from 1 to 50.

ȋ̝̊ need help on this. Please

Let me try!

For number 1 try and run the following codes:

Option 1: 'C++'


// If-Else Even and Odd program

#include <iostream>
using namespace std;

bool isOdd(int integer);

int main ()
{	int integer;
	
// Prompt user for integer and obtain integer.

  cout << "Please enter an integer"

		<< endl;
  cin >> integer;


 // determine if integer is even or odd
     if(isOdd(integer) == true)
         cout << integer << "is odd." << endl;
     else
         cout << integer << "is even." << endl;

     return 0;
}

bool isOdd( int integer )
{

  if ( integer % 2== 0 )
     return true;
  else
     return false;
}



Option 2: 'C'


#include<stdio.h>
 
main()
{
   int n;
 
   printf("Enter an integer\n" );
   scanf("%d",&n);
 
   if ( n%2 == 0 )
      printf("Even\n" );
   else
      printf("Odd\n" );
 
   return 0;
}

*** Please, its been a while i did programming.. forgive me if it didn't run.. and I suggest you try playing around with some very simple function calls until things become clear as you won't be able to do very much at all in C++ without understanding the concept.

See what Seun's unintelligent software dey do to my codes!.. Try and quote my post and you would see the actual codes for Option 2..

This is spoon feeding, nothing more. That number 1, for real?

Have you read any book on c++ programming?

For Number 2 try the following codes:


#include <iostream>

using namespace std;

int main(){

double buffer;

cout<<"Please enter a positive number, negative to exit:\n";

cin>>buffer;

while(buffer >= 0){

cout<<"The square of "<<buffer<<" is: "<<buffer*buffer<<endl;

cout<<"Please enter a positive number, negative to exit:\n";

cin>>buffer;

}//end while

return 0;

}




For number 3 try these codes:

#include <iostream>

using namespace std;
//using namespace system;


int isPrime(long num) // Returns 1 (true) if its prime, or 0 (false) if not
{
if (num < 2) // 1 is not a prime number
return 0;

// if it is > 2 and an even number, then it definitely is not a prime
if (num > 2 && (num % 2) == 0)
return 0;

//considering the fact all can be divided by 1 and itself,
//start checking if there is any other divisor, if found one then no need to continue, it is not a prime
for(int i = 2; i < num; i++ )
{
cout << " divisor: " << i << endl;
if ( (num % i) == 0) // if it is divisible by i
{
// a divisor other than 1 and the number itself
return 0; // no need for further checking
}
}


return 1; // if all hurdles/checks are crossed, hey, its a prime
}

int main()
{
int num;
do {
cout << " enter a number (0 to stop) " << endl;
cin >> num;
if (num) {
if (isPrime(num))
cout << num << " is a prime numebr " << endl;
else
cout << num << " is NOT a prime numebr " << endl;
}
} while (num > 0);

return 0;
}



You can put a counter is solution 3 to meet your needs.. try the rest on your own. Programming is easy if you know the syntax and some function.
Try and read books and lecture notes on C++ and you will be fine.. Have a nice day. My head is already becoming heavy with these codes...