Lecture5 - Outline CS11600 Introduction to Computer...

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1 CS11600: Introduction to Computer Programming (C++) Lecture 5 Svetlozar Nestorov University of Chicago 1/15/2003 Svetlozar Nestorov, CS 116: Intro to Programming II 2 Outline Computer memory Lvalues and rvalues Arrays and strings Pointers Dynamic memory allocation 1/15/2003 Svetlozar Nestorov, CS 116: Intro to Programming II 3 Memory Hierarchical memory organization: • Cache • RAM (main memory) • Hard disk (secondary storage) • Tape (tertiary storage) Our focus is on RAM: • Think of it as a long list of bytes. 1/15/2003 Svetlozar Nestorov, CS 116: Intro to Programming II 4 Heap and Stack The Stack: When a function is called a new frame is pushed on the stack. The frame contains parameters, local variables, and other info. When a function call returns its frame is popped off the stack. The Heap: For dynamically allocated memory. Heap and stack are on opposite end of memory and grow towards each other. 1/15/2003 Svetlozar Nestorov, CS 116: Intro to Programming II 5 Lvalues and Rvalues Lvalue is writable memory location, i.e. can be
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