Categories

## Learning Math in C

A menu driven program that I wrote using C language to solve the factorial, prime numbers, and odd and even numbers.

I am currently accepting programming work, IT projects, school and application development, programming projects, thesis and capstone projects, IT consulting work, computer tutorials, and web development work kindly contact me at the following email address for further details.  If you want to advertise on my website kindly contact me also in my email address also. Thank you.

My mobile number here in the Philippines is 09173084360.

Program Listing

``````#include<stdio.h>
#include <stdlib.h>

int main()

{
printf("\n\n\t\tLearning Math in C\n");
printf("\nCreated By Mr. Jake R. Pomperada,MAeD-IT,MIT\n\n\n");
int choice, num, i;
unsigned long int fact;

while(1)
{
printf("1. Factorial \n");
printf("2. Prime\n");
printf("3. Odd\\Even\n");
printf("4. Exit\n\n\n");
scanf("%d",&choice);

switch(choice)
{
case 1:
printf("Enter number:\n");
scanf("%d", &num);
fact = 1;
for(i = 1; i <= num; i++)
{
fact = fact*i;
}
printf("\n\nFactorial value of %d is = %lu\n\n\n",num,fact);
break;

case 2:
printf("Enter number:\n");
scanf("%d", &num);
if(num == 1)
printf("\n1 is neither prime nor composite\n\n");
for(i = 2; i < num; i++)
{
if(num%i == 0)
{
printf("\n%d is not a prime number\n\n", num);
break;
}

}
/*
Not divisible by any number other
than 1 and itself
*/
if(i == num)
{
printf("\n\n%d is a Prime number\n\n", num);
break;
}

case 3:
printf("Enter number:\n");
scanf("%d", &num);

if(num%2 == 0) // 0 is considered to be an even number
printf("\n\n%d is an Even number\n\n",num);
else
printf("\n\n%d is an Odd number\n\n",num);
break;

case 4:
exit (0);

case 5:
break;

default:
printf("\n\nINPUT CORRECT OPTION\n\n\n");
break;
}
}
return 0;
}
``````
Categories

## Convert Days to Years, Weeks and Days

Machine Problem

Write a program to ask the user to give input number of days and convert it to years, weeks, and days

and display the result on the screen.

I am currently accepting programming work, IT projects, school and application development, programming projects, thesis and capstone projects, IT consulting work, computer tutorials, and web development work kindly contact me at the following email address for further details.  If you want to advertise on my website kindly contact me also in my email address also. Thank you.

My mobile number here in the Philippines is 09173084360.

Program Listing

``````/* days.c
Convert days to years weeks and days
Author   : Jake R. Pomperada, MAED-IT, MIT
Bacolod City, Negros Occidental Philippines
*/

#include <stdio.h>

int main()
{
int days=0, years=0, weeks=0;

system("COLOR F0");
printf("\n\n");
printf("\tConvert Days to Years, Weeks and Days");
printf("\n\n");
printf("\tHow Many Days : ");
scanf("%d", &days);

/* Conversion in this portion */
years = (days / 365);   /* Ignoring leap year */
weeks = (days % 365) / 7;
days  = days - ((years * 365) + (weeks * 7));

printf("\n\n");
printf("\tDisplay Results");
printf("\n\n");
printf("\tNumber of Years : %d\n", years);
printf("\tNumber of Weeks : %d\n", weeks);
printf("\tNumber of Days  : %d", days);
printf("\n\n\n");
printf("\tEND OF PROGRAM");
printf("\n\n");
}

``````