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摘要： Cache Definition: computer memory with short access time used for the storage of frequently or recently used instructions or data(i-cachhe and d-cache). more generally, used to optimiz... 阅读全文

摘要： Buffer Overflows IA32 Linux Memory Layout Stack Runtime stack (8MB limit) Heap Dynamically allocated storage Allocated by malloc(), calloc(), new()... 阅读全文

摘要： Stack-Based Languages Need some place to store state of each instantiation(实例) Arguments Local variables Return pointer 阅读全文

摘要： Moving Data: IA32 movx Source, Dest x is one of {b(1-byte), w(2-byte), l(4-byte)} Operand Types Immediate: Constant integer data Example: $0x400, $-533... 阅读全文

摘要： The time required to execute a program depends on: The program The compiler The instruction set architecture(ISA) The hardware implementation The ISA defines: T... 阅读全文

摘要： printf("Signed Max:%d\n", 0x7FFFFFFF); printf("Signed Min:%d\n", 0x80000000); printf("Unsigned Max:%u\n", 0xFFFFFFFF); printf("Unsigned Min:%u\n", 0x00000000); ... 阅读全文

摘要： There are a fixed number of registers in the CPU Registers hold data Data move from Memory to Registers Results move from Registers back to Memory There is an 1-cache in the... 阅读全文

摘要： 1. 递归 f(n) = f(n-1) + f(n-2) 2. 从下向上计算 long long Fibonacci(int n) { int result[2] = { 0, 1 }; if (n < 2) { return result[n]; } long long fibNminusOne... 阅读全文

摘要： int StrToInt(const char* str) { long long num = 0; bool minus = false; if (str != NULL && *str != '\0') { if (*str == '+') str++; else i... 阅读全文

摘要： 编写代码时，注意考虑边界条件，特殊输入（比如空指针，空字符串等）及错误处理。空类型。 空类型的实例中不包含任何信息，求sizeof应该是0，但是当我们声明该类型的实例的时候，它必须在内存中占有一定的空间，否则无法使用这些实例。占用多少内存由编译器决定。Visual Studio中，每个空类型的实例占... 阅读全文