If Statement in C Programming with Example

⇒ For video tutorial you can see below video:

Conditions

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Decision Making:
✔ In life, we all have to make decisions. In order to make a decision we weigh out our      options and so do our programs.

✔ Here is the general form of the decision making structures found in C.
✔ For that we have to use Relational  operators.
✔ Now most of the person who are not from the Computer science or not from the computer          field they don’t know about that so I will explain you.
✔ The symbol which we use to decide a things which we want in our program.
✔ In short with the help of relational operator we will make program and make correct                   programs.
✔ So you can see below relational operator and result also:

Here we go for the conditions in c

There are 3 types of conditions in c:

1. if condition – here you can find only 2 answer (Like True or False)

Example : -
#include<stdio.h>
#include<conio.h>

void main()

{

int a,b;

clrscr();
printf("Enter The Value of A: \n");
scanf("%d",&a);

printf("Enter The Value of B: \n");

scanf("%d",&b);

          if(a>b)

                       {

                                    printf("A is greater than B");

                        }

                else

                        {

                                    printf("B is greater than A");

                         }

getch();

}

Output:

Enter the value of A: 25

Enter the value of B : 40

B is greater than A

2. Else if condition – here you can find more than 2 answer (Like Which day is today so you have 7 answer)

Note :- Else if and switch case work same but both approach and programming way is different.

Example:

#include<stdio.h>

#include<conio.h>

void main()

{

int a;

clrscr();

printf("Enter Number: \n");

scanf("%d",&a);

                if(a>0)

                                {

                                                printf("No is Positive");

                                }

                else if(a<0)

                                {

                                                printf("No is Negitive");

                                }

                                else

                                {

                                                printf("No is Zero");

                                }

getch();

}

Output:

Enter Number : 27

No is positive

3. Switch Case - here you can find more than 2 answer (Like Which day is today so you have 7 answer)

Note :- Else if and switch case work same but both approach and programming way is different

Example:

#include<stdio.h>

#include<conio.h>

void main()

{

int a;

clrscr();

printf("Enter Your Choice: \n");

scanf("%d",&a);

switch(a)

{

                case 1: printf("Today is Sunday");

                                                break;

                case 2: printf("Today is Monday");

                                                break;

                case 3: printf("Today is Tuesday");

                                                break;

                case 4: printf("Today is Wednesday");

                                                break;

                case 5: printf("Today is Thursday");

                                                break;                  

                case 6: printf("Today is Friday");

                                                break;

                case 7: printf("Today is Saturday");

                                                break;

                default: printf("Wrong Choice , Please Select No between 1 to 7");                                                           

                                                break;

}

getch();

}

Output:

Enter your choice: 5

Today is Thurssday