Lecture 3 | Mastering C Programming: Operators, I/O Operations, and Operator Precedence

Welcome to Lecture 3 of our comprehensive C Programming course! In this session, we delve into the fundamental building blocks of C programming, exploring a variety of operators, input and output operations, and understanding the precedence of operators. Whether you're a beginner or looking to reinforce your programming skills, join us to enhance your understanding of these critical concepts. Don't forget to like, share, and subscribe for more insightful lectures on mastering C programming!

Please answer the following questions in the comment section below:

# 1. Explain the concept of operator precedence in C. Provide an example where understanding operator precedence is crucial for correct program execution.
# 2. Discuss the difference between the 'if' statement and the 'if-else' statement in C. Provide a practical example to illustrate when to use each.
# 3. How can parentheses be used to alter the precedence of operators in an expression? Provide an example to demonstrate the impact of parentheses on the evaluation of an expression.
# 4. When might you choose to use a nested 'if' statement? Provide a scenario and explain the advantages of using nested 'if' statements in decision control structures.

Feel free to share your thoughts and insights!

[anjalis.]

Ans[4]. When we want to check multiple conditions at a time, nested if statements are used.Using nested if statements in decision control structures allows us to create more complex and detailed conditional logic.

[akshayyeole]

00:00 Introduction
06:05 Revision of Assignment, Arithematic, Relational, Operators
20:04 Logical Operators
35:55 Increment and Decrement Operators
50:15 Ternary /Conditional Operators
01:03:38 Precedence of Operators

[anjalis.]

Ans[3]. Parentheses are used in expressions to specify the order of operations, altering the default precedence of operators. Expressions inside parentheses are evaluated first. For example, in the expression 2 * (3 + 4), the addition inside the parentheses is performed before the multiplication.

[anjalis.]

Ans [1].Operator precedence in C determines the order in which operators are evaluated in an expression. Operators with higher precedence are evaluated first. For example, in the expression a + b * c, the multiplication (*) has higher precedence than addition (+), so b * c is evaluated first.

[anjalis.]

Ans[2]. 'if' statement is used when the user want to display a block of code if the specified condition is true. 'if-else' statement display a block of code written within if statement if the condition is true otherwise displays the else part.
e.g.
1)
#include <stdio.h>

int main()
{
int a = 5;
if(a>0){
printf("a is positive.");
}

return 0;
}
Output => a is positive.

2)
#include <stdio.h>

int main()
{
int a = 5;
if(a>0){
printf("a is positive.");
}
else{
printf ("a is negative.");
}

return 0;
}

Output => a is positive.