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Work with memory directly. Learn how pointers store addresses, how references create aliases, and when to use each for efficient parameter passing.
Memory addresses and aliases
Understanding memory locations
Using & to find addresses
Variables that store addresses
Pointer syntax
Creating pointer variables
Using * to get values
Predict the output
Using nullptr
Array names as addresses
Adding to pointers
Understanding movement
Aliases for variables
Variable aliases
Variable alias
Key differences
Understanding aliases
Function parameter technique
Avoiding copies safely
Variable alias
Choosing the right tool
Function parameter behavior
Avoid common crashes
Safe pointer habits
Writing swap function
Verify your approach
Using pointer arithmetic
Combining techniques
Avoiding errors
Dereferencing practice
Multiple names scenario
Predicting results
Preventing crashes
Using two pointers
Understanding the algorithm
Computing several values
Using const references
Understanding restrictions
Tracking gift exchanges
Inverting the mapping
Breaking down the solution
Complete solution
Following the execution
summary
Integer type
Finding position in grid
Counting steps in grid
Breaking down the solution
Conditional execution
Complete solution
summary
What we learned