How To Use Strlen in C

 In this article I will teach you how to use strlen function using C programming language.

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 Program Listing

#include <stdio.h>

#include <string.h>

void main()
{
 char str[] = "Computers";
 int len_str;
 len_str = strlen(str);
 printf("The word is %s  the length is %d\n", str, len_str);

}
 

Increment a Number in C++

Increment a Number in C++

 A simple program to increment a given number using C++ programming language.

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 Program Listing

#include <iostream>


int main()
{
 int a=10,b=20;

 std::cout << "\n\n";
 std::cout <<"\tIncrement a Number in C++";
 std::cout << "\n\n";
 std::cout << "\tOrginal Value of A   : " << a <<"\n";
 std::cout << "\n\n";

 a++;

 std::cout << "\tIncrement Value of A : " << a <<"\n";
 std::cout << "\n\n";
 std::cout << "\tOrginal Value of B   : " << b <<"\n";
 std::cout << "\n\n";

 b++;

 std::cout << "\tIncrement Value of B : " << b <<"\n";
 std::cout << "\n\n";
 std::cout << "\tEnd of Program";
 std::cout << "\n\n";


}

Introduction To C++

Reverse a Number in C

Reverse a Number in C

 A program that will ask the user to give a number and then the program will reversed the arrangement of the given number using C programming language.

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Program Listing

reverse.c

#include <stdio.h>

int main()

{

    int n=0;

    int rev_num = 0;

    

    printf("\n\n");

    printf("\tReverse a Number in C");

    printf("\n\n");

    printf("\tGive a Number : ");

    scanf("%d",&n);

    

    while(n!=0){

      rev_num = rev_num * 10 + n%10;

      n = n/10;

    }

    

    printf("\n\n");

    printf("\tReversed Number : %d", rev_num);

    printf("\n\n");

    printf("\tEnd of Program");

    printf("\n\n");

}

Student Year Level in Java

Student Year Level in Java

 A simple program to ask the user to give year level and then the program will check if the given year level belongs to freshmen, sophomore, juniors or seniors using Java programming language.

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Program Listing

import java.util.Scanner;

public class Year_Level {

public static void main(String[] args) {

// TODO Auto-generated method stub

  int year_level;

  Scanner input = new Scanner(System.in);

  

    System.out.println();

       System.out.print("\tStudent Year Level in Java\n");

   System.out.println();

  System.out.print("\tEnter your year level: ");

  year_level = input.nextInt();

  

  System.out.println("\n");

  

  switch (year_level)

  {

  case 1: System.out.println("\tYou Belong To Freshmen."); break;

  case 2: System.out.println("\tYou Belong To Sophomore."); break;

  case 3: System.out.println("\tYou Belong To Juniors."); break;

  case 4: System.out.println("\tYou Belong To Seniors."); break;

  default: System.out.println("\tInvalid Year Level. Try Again.");

    }

   

  System.out.println("\n");

  System.out.print("\tEnd of Program\n"); 

input.close();

}

}

Cube a Number Using Pointers in C++

Cube a Number Using Pointers in C++

 A program that will ask the user to give a number and then the program will compute the cube value of the given number using pointers in C++ programming language.

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Program Listing

#include <iostream>

using namespace std;

int main() 

{

int num=0, cube=0;

    int *pointer;

    

    cout <<"\n\n";

    cout <<"\tCube a Number Using Pointers in C++\n\n";

    cout <<"\n\n";

    cout << "\tGive a number : ";

    cin >> num;

    

    pointer = &num;

    

    cube = *pointer * *pointer * *pointer;

    

    cout <<"\n\n";

    cout << "\tThe Cube of " << num << " is " << cube <<".\n";

    cout <<"\n\n";

    cout <<"\tEnd of Program";

    cout <<"\n\n";

}

Swap of Two Numbers Using Pointers in C++

Swap of Two Numbers Using Pointers in C++

  A program to ask the user to give two numbers and then the program will swap the two given numbers using pointers in C++ programming language.

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Program Listing

#include <iostream>

using namespace std;

int swaping(int *x, int *y)

{

    int temp;

    temp = *x;

    *x   = *y;

    *y   = temp;

}

int main()

{

    int a=0, b=0;

    cout <<"\n\n";

    cout <<"\tSwap of Two Numbers Using Pointers in C++";

    cout <<"\n\n";

    cout <<"\tGive values for a and b : ";

    cin >> a >> b;

    

    cout <<"\n\n\tBefore swapping of numbers : a = " <<a <<

" and b = " << b << "\n";

    swaping(&a,&b);

    cout <<"\n\tAfter swapping of numbers : a = " << a <<

" and b = " << b << "\n";

    cout <<"\n\n";

    cout <<"\tEnd of Program";

    cout <<"\n\n";

}

Swap of Two Numbers Using Pointers in C

Swap of Two Numbers Using Pointers in C

 A program to ask the user to give two numbers and then the program will swap the two given numbers using pointers in C programming language.

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=================================================

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Program Listing

#include <stdio.h>

int swaping(int *x, int *y)

{

    int temp;

    temp = *x;

    *x   = *y;

    *y   = temp;

}

int main()

{

    int a=0, b=0;

    printf("\n\n");

    printf("\tSwap of Two Numbers Using Pointers in C");

    printf("\n\n");

    printf("\tGive values for a and b : ");

    scanf("%d%d", &a, &b);

    printf("\n\n\tBefore swapping of numbers : a = %d and b = %d\n", a, b);

    swaping(&a, &b);

    printf("\n\tAfter swapping of numbers : a = %d and b = %d\n", a, b);

    printf("\n\n");

    printf("\tEnd of Program");

    printf("\n\n");

}

Student Year Level Checker in C++

Student Year Level Checker in C++

 A program to ask the user to give a number and then the problem will check the year level of the student using C++ programming language.

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Program Listing

// year_level.cpp

// Author : Mr. Jake R. Pomperada, BSCS, MAED-IT

// Date : August 16, 2018 Thursday

// Website : http://www.jakerpomperada.com

// Email : jakerpomperada@jakerpomperada.com

#include <iostream>

using namespace std;

int main()

{

int year_level=0;

cout <<"\n\n";

cout << "\tYear Level Checker in C++";

cout << "\n\n";

cout << "\tWhat is your year level? : ";

cin >> year_level;

if (year_level==1) {

cout <<"\n\n";

cout <<"\tYou belong to Freshmen.";

}

if (year_level==2) {

cout <<"\n\n";

cout <<"\tYou belong to Sophomore.";

}

if (year_level==3) {

cout <<"\n\n";

cout <<"\tYou belong to Juniors.";

}

if (year_level==4) {

cout <<"\n\n";

cout <<"\tYou belong to Seniors.";

}

if (year_level <1 || year_level >4) {

cout <<"\n\n";

cout <<"\tInvalid Year Level. Try Again !!!";

}

cout <<"\n\n";

cout <<"\tEnd of Program";

cout <<"\n\n";

}

Leap Year Using a Function in C++