If Else If

Question

I’m not exactly sure how to do a proper if else if statement in C programming. I’m also unsure as when to use the curly brackets in the code (I know they’re not always required.
This is my first programming language & I’m teaching myself so I apologize for my total ignorance. 😇

If someone could provide a very simple example of an if else if program & kindly walk me through it, I’d really appreciate it.

~Thanks in advance, Cj

Answer 1

The if statement has the same function as other languages.
It has three basic forms:

if( expression )
statement

OR:

if( expression )
statement1
else
statement2

OR:

if( expression )
statement1
else if( expression )
statement2
else
statement3

Answer 2

if (condition1) {
// execute if condition1 is true
}
else if (condition2) {
// if condition1 is false, execute if condition2 is true
}

Answer 3

if(condition1)
{
Statements; //executes when condition 1 is true
}
else if(condition2)
{
Statements;//executes when condition 2 is true
}

Note that the curly braces{} are not required when there is only one statement in the if-block or else-block,, more than one statement there we require the curly braces..

Answer 4

theseigemeister 🐶✨
You are welcome! 😊

Answer 5

Thank you Fermi, appreciate it!

Answer 6

Thanks a lot Fermi. Very helpful.

Answer 7

As for curly brackets, they are not required if only one statement follows the if-else statement.

if (true)
std::cout << "Hello";

If you have multiple statements you want to execute based on the evaluation of condition, then you have to group them together using curly braces.

if (true) {
// statement 1
// statement 2
}

Answer 8

Thanks for your response Danijel.

Great community on here! 🌟✨

Answer 9

Thank you for the response/information TAL.

Answer 10

Thanks for clarifying Sai Kiran.

Appreciate everyone’s feedback.

Answer 11

1.We can use curly brackets when there is a code more than one line after if Or else.
2.In all other cases Its is not that much important to use curly brace

Eg:
If(condition1)
{
/* code
* Some printf statements
* Some condition
* Increment or decrement
*/
}
else
If(condition2)
Printf("single line code after if");
else
Printf("single code after else");

Answer 12

Based on time & space complexity's Use for loop but its better & recomended to use recursion for a good coder

Answer 13

If its based on curly brackets its similar to the above if else form
For nested for loop curly brackets are not required

Eg :

/* in this case we wont need any curly bracket. */
for(int i=0;i<3;i++)
for(int j=0;j<3;j++)
{
scanf("%d",&a[i][j]);
}

Answer 14

In Python

Answer 15

I also had a doubt on usage of for loops(where to use)