Conditional Statements

Ladder if

If a if statement is used within an else statement then such a control structure is called as ladder if statement.
A ladder if is used to check a condition if some other condition is false

Syntax:

if(condition)
  { 
     statements
     ----------
  }
else    
     if(condition)
    {
       statements
       ----------
    }
    else
        if(condition)
        {
           statements
           ----------
        }
        else
		---------

#Write a program to read a number and check if it is a positive no. or negative no or zero.

  #include⁢stdio.h>
  main()
  {
    int a;
    printf("Enter a Number");
    scanf("%d",&a);
    if(a>0)
        printf("Number is Positive");
    else
        if(a>0)
            printf("Number is Negative");
        else
            printf("Number is Zero");
  }

Enter a Number 56 
Number is positive

#Write a program to read 3 different nos. a , b and c. and find greatest of them.

  #include⁢stdio.h>
  main()
  {
    int a,b,c;
    printf("Enter 3 different Numbers ");
    scanf("%d %d %d",&a,&b,&c);
    if(a>b && a>c)
        printf("%d is Greatest",a);
    else
        if(b>c)
            printf("%d is Greatest",b);
        else
            printf("%d is Greatest",c);
  }

Enter 3 different Numbers 31 7 78 
Greatest number is 78

#Write a program to read color code i.e. a char value and print appropriate color according to code [ r-red , g-green, b-blue or any other char-white].

  #include⁢stdio.h>
  main()
  {
    char a;
    printf("Enter Color code ");
    scanf("%c",&a);
    if(a=='r'||a=='R')
        printf("Red");
    else
        if(a=='g'||a=='G')
            printf("Green");
        else
            if(a=='b'||a=='B')
                printf("Blue");
            else
                printf("White");
  }

Enter Color Code B
Blue

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Introduction to C

DataType and Operation

Conditional statements

Iterative statements

Functions

Array

Pointers

Structures

File I/O

Graphics

Additional Features