Getting started with C – part 3

Getting started with C – part 3



play-rounded-fill play-rounded-outline play-sharp-fill play-sharp-outline
pause-sharp-outline pause-sharp-fill pause-rounded-outline pause-rounded-fill
00:00

Could you specify what exactly you need in “Getting Started with C – Part 3”?

Are you looking for:
 Advanced concepts in C? (e.g., pointers, memory allocation)
 Practical coding exercises?
 File handling, data structures, or algorithms?
 Debugging techniques in C?

Let me know your focus, and I’ll provide the best content!

Great! Let’s continue with Getting Started with C – Part 3. If you’re following along from Part 1 and Part 2, you likely already covered:

  • Part 1: Introduction, setting up a compiler, basic syntax, main(), printf()

  • Part 2: Variables, data types, operators, and basic input/output with scanf()


🧩 Part 3: Control Flow in C

In this part, you’ll learn how to control the flow of execution in a C program using:

  1. Conditional Statements

  2. Loops

  3. switch Statement


1. 🧠 Conditional Statements

✅ if, else if, and else

c

#include <stdio.h>

int main() {
int num = 10;

if (num > 0) {
printf(“Positive number\n”);
} else if (num < 0) {
printf(“Negative number\n”);
} else {
printf(“Zero\n”);
}

return 0;
}

💡 Use comparison operators like ==, !=, <, >, <=, >= to form conditions.


2. 🔁 Loops

✅ while Loop

c

#include <stdio.h>

int main() {
int i = 0;

while (i < 5) {
printf(“%d\n”, i);
i++;
}

return 0;
}

✅ for Loop

c

#include <stdio.h>

int main() {
for (int i = 0; i < 5; i++) {
printf(“%d\n”, i);
}

return 0;
}

✅ do...while Loop

c

#include <stdio.h>

int main() {
int i = 0;

do {
printf(“%d\n”, i);
i++;
} while (i < 5);

return 0;
}


3. 🔄 switch Statement

Used when you have multiple values to check for a single variable:

c

#include <stdio.h>

int main() {
int day = 3;

switch (day) {
case 1:
printf(“Monday\n”);
break;
case 2:
printf(“Tuesday\n”);
break;
case 3:
printf(“Wednesday\n”);
break;
default:
printf(“Another day\n”);
}

return 0;
}


🧠 Quick Tips

  • Always break in switch cases unless you want fall-through behavior.

  • Use else if chains for multiple condition checks.

  • Prefer for loops when the number of iterations is known.


✅ Practice

Try writing a C program that:

  • Takes an integer input from the user

  • Prints whether it’s even or odd

  • Loops until the user inputs 0

Would you like a sample solution or challenge for that?

Let me know if you’d like to move to functions, arrays, or pointers in Part 4!

Getting started with C – part 3

Introduction to C++: Part 3

C PROGRAMMING

Getting Started in C



Leave a Reply

Your email address will not be published. Required fields are marked *

error: