COMPUTER SCIENCE 101: COMPLETE BEGINNER'S GUIDE
For High School & First Year College Students - USA/UK/Canada
By: Asha | Last Updated: April 2026
TABLE OF CONTENTS:
1. Programming Logic Made Simple
2. 10 Most Asked Coding Questions + Solutions
3. Flowchart vs Pseudocode - When To Use What
4. C Programming Cheat Sheet - Score 90%+
CHAPTER 1: PROGRAMMING LOGIC - THE "PIZZA METHOD"
Problem: Most students fail because they can't "think like a computer"
Solution: Use The Pizza Method I created
Step 1: What is the Goal? = What pizza do you want?
Example: "Make a program that adds two numbers"
Goal = Get sum of num1 + num2
Step 2: What Ingredients Needed? = Input
Ingredients: num1, num2
Step 3: What is the Recipe? = Process
Recipe: sum = num1 + num2
Step 4: How to Serve? = Output
Serve: Print sum
, FLOWCHART FOR PIZZA METHOD:
[Start] → [Get num1, num2] → [sum = num1 + num2] → [Print sum] → [End]
This works for 90% of beginner problems. Try it.
CHAPTER 2: 10 CODING QUESTIONS THAT ALWAYS COME IN EXAMS
Q1. Check Even or Odd
Logic: Divide by 2. Remainder 0 = Even
C Code:
if(num % 2 == 0) printf("Even");
else printf("Odd");
Trick: % means "remainder". Easy to remember.
Q2. Find Largest of 3 Numbers
Logic: Compare 1 by 1
C Code:
if(a>b && a>c) printf("%d",a);
else if(b>a && b>c) printf("%d",b);
else printf("%d",c);
Exam Tip: Draw 3 boxes. Cross out smaller ones.
Q3. Print Table of Any Number
Logic: Loop from 1 to 10
C Code:
for(i=1; i<=10; i++){
printf("%d x %d = %d\n", n, i, n*i);
}
Memory Hook: "i" = "iteration". Goes 1 to 10.
For High School & First Year College Students - USA/UK/Canada
By: Asha | Last Updated: April 2026
TABLE OF CONTENTS:
1. Programming Logic Made Simple
2. 10 Most Asked Coding Questions + Solutions
3. Flowchart vs Pseudocode - When To Use What
4. C Programming Cheat Sheet - Score 90%+
CHAPTER 1: PROGRAMMING LOGIC - THE "PIZZA METHOD"
Problem: Most students fail because they can't "think like a computer"
Solution: Use The Pizza Method I created
Step 1: What is the Goal? = What pizza do you want?
Example: "Make a program that adds two numbers"
Goal = Get sum of num1 + num2
Step 2: What Ingredients Needed? = Input
Ingredients: num1, num2
Step 3: What is the Recipe? = Process
Recipe: sum = num1 + num2
Step 4: How to Serve? = Output
Serve: Print sum
, FLOWCHART FOR PIZZA METHOD:
[Start] → [Get num1, num2] → [sum = num1 + num2] → [Print sum] → [End]
This works for 90% of beginner problems. Try it.
CHAPTER 2: 10 CODING QUESTIONS THAT ALWAYS COME IN EXAMS
Q1. Check Even or Odd
Logic: Divide by 2. Remainder 0 = Even
C Code:
if(num % 2 == 0) printf("Even");
else printf("Odd");
Trick: % means "remainder". Easy to remember.
Q2. Find Largest of 3 Numbers
Logic: Compare 1 by 1
C Code:
if(a>b && a>c) printf("%d",a);
else if(b>a && b>c) printf("%d",b);
else printf("%d",c);
Exam Tip: Draw 3 boxes. Cross out smaller ones.
Q3. Print Table of Any Number
Logic: Loop from 1 to 10
C Code:
for(i=1; i<=10; i++){
printf("%d x %d = %d\n", n, i, n*i);
}
Memory Hook: "i" = "iteration". Goes 1 to 10.
