Decision Making and Branching - IF-ELSE C Programs

This article is about the Programs of Decision making and branching (if else statements)

Simple If statement program

//C program to print even numbers up to the user entered limit
#include<stdio.h>
#include<conio.h>
void main()
{
    int i=1,n;
    clrscr();
    printf("Enter a number up to which u want the program to print even numbers");
    scanf("%d',&n);
    label:
/*label for goto statement 
/*(here looping can be used but its not yet covered in the topics
    if( (i%2==0) && (i<=n) )
      {
      printf("%d",i);
      i++;
      goto label;
      }
    getch();
} 

Simple If-else Statement Program

//C program for simple if-else statement 
#include<stdio.h>
#include<conio.h>
void main()
        {
           int n;
           clrscr();
           printf(" \t\t--------C PROGRAM TO CHECK WEATHER THE NUMBER IS EVEN OR ODD--------");
           printf( " Enter a number:");
           scanf(" %d",&n);
           if(n%2==0)
                       {
                         printf( "\t\t******THE ENTERED NUMBER IS EVEN******");
                        }
           else
                        {
                         printf("\t\t******THE ENTERED NUMBER IS ODD******");
                         }
            getch();
            }

Nested If- Else statement Program

//C program to find maximum of three numbers

#include<stdio.h>
#include<conio.h>
void main()
        {
          int x,y,z,max;
          clrscr();
          printf(" ENTER THREE NUMBER TO FIND MAXIMUM OF THOSE THREE\n");
          printf(" X:\n");
          scanf("%d",&x);
          printf(" Y:\n");
          scanf("%d",&y);
          printf(" Z:\n");
          scanf("%d",&z);
          
          if( x>y)
                   {
                      if(x>z)
                            max=x;               //Nested statement
                    }
           else if(y>z)
                   {
                     max=y;
                    }
          else max=z;

Else-If ladder programs

//C program to compare the two entered number 

#include<stdio.h>
#include<conio.h>
void main()
       {
         int i,j;
         printf(" ENTER TWO NUMBERS:\n" );
         printf(" X:");
         scanf("%d",&i);
         printf(" Y:");
         scanf("%d",&j);
         if( i>j)
                {
                  printf(" \nX IS GREATER THAN Y ");
                  }
          else if (j<i)
                  {
                   printf(" \nY IS GREATER THAN X");
                     }
           else
                 {
                    printf(" \nBOTH ARE EQUAL");
                   }
         }

IF ANY OF THE ABOVE PROGRAMS HAVE ANY ERROR PLEASE TELL ME IN COMMENT.

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If you want to know about IF-else statement in detail go to : http://youthhworld.blogspot.com/2015/03/if-else-statement.html