Appendix C: Common Errors and How to Fix Them

Table of Contents

• Table of Contents
• C.1 Syntax Errors
• C.2 Compilation Errors
• C.3 Runtime Errors
• C.4 Logical Errors
• C.5 Exercises
• C.6 Solutions
  • C.6.1 Solution 1
  • C.6.2 Solution 2
  • C.6.3 Solution 3

C.1 Syntax Errors

• Missing semicolons
• Mismatched braces or parentheses
• Misspelled keywords

C.2 Compilation Errors

• Undefined references
• Type mismatches
• Missing header files

C.3 Runtime Errors

• Division by zero
• Null pointer dereference
• Buffer overflow

C.4 Logical Errors

• Off-by-one errors in loops
• Incorrect operator usage
• Misplaced parentheses in expressions

C.5 Exercises

1. What happens if you forget a semicolon at the end of a statement?
2. How can you avoid buffer overflows?
3. What is a logical error?

C.6 Solutions

C.6.1 Solution 1

The compiler will report a syntax error.

C.6.2 Solution 2

Always check array bounds and use safe functions like strncpy.

C.6.3 Solution 3

A logical error is when the program runs but produces incorrect results due to a mistake in logic.