Constructs Examples

--------
if..else
--------

#include<stdio.h>
using namespace std;
main()
{
 int a,b;
 a=2;
 b=3;
 if(a>b)
 {
  printf("a is greater than b\n");
 
 }
 else
 {
  printf("b is greater than a\n");
 
 }
}

 



---------------
switch..case
---------------

#include<stdio.h>
using namespace std;
main()
{
    int op;
    float a;
    float b;
    float result;
    while(1)
    {
    printf("Select the Arithmetic Operation: \n 1 - Addition\n 2 - Subtraction\n 3 - Multiplication\n 4 - Division\n \n \n");
    scanf("%d", &op);
    printf("Enter first number: ");
    scanf("%f", &a);
    printf("Enter second number: ");
    scanf("%f", &b);
   
    switch (op)
    {
        case 1:
            result = a + b;
            break;
        case 2:
            result = a - b;
            break;
        case 3:
            result = a * b;
            break;
        case 4:
            if (b == 0)
            {
                printf("Cannot divide by zero.");
            }
            result = a / b;
            break;
      
            default:
                {
                 printf("invalid choice");
                 break;
                }   
}
printf("The result is: %f\n",result);
printf("\n");
}
}

-------------
while loop
-------------

#include<stdio.h>
using namespace std;
main()
{
 char ch;
 printf("Enter your choice:\n");
 scanf("%c",&ch);
 while(ch!='y')
 {
 
  printf("No\n");
  printf("No\n");
  printf("No\n");
  printf("No\n");
  break;
 }
}