Tricky C questions
以下是几个棘手的
C 问题, 很难做, 看看自己会做几个?
How do you write a program which produces its own source code as its output?
How can I find the day of the week given the date?
Why doesn’t C have nested functions?
What is the most efficient way to count the number of bits which are set in a value?
How can I convert integers to binary or hexadecimal?
How can I call a function, given its name as a string?
How do I access command-line arguments?
How can I return multiple values from a function?
How can I invoke another program from within a C program?
How can I access memory located at a certain address?
How can I allocate arrays or structures bigger than 64K?
How can I find out how much memory is available?
How can I read a directory in a C program?
How can I increase the allowable number of simultaneously open files?
What’s wrong with the call fopen(”c:\newdir\file.dat”, “r”)
?
without using third variable how to swap two variable?
print a semicolon without using semicolon else where in the program ?
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str1
string.h
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......
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extern "C"
{
#endif
int add(int x,int y);
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Sun Studio 是 Solaris/OpenSolaris 操作系统上的首选开发环境。它包含并优化了 C 、 C++ 及 Fortran 编译器，而且融入了业界领先的 IDE 和性能调试技术。随着软硬件技术发展关系的调整，开发多处理器和多线程应用的重要性正日益突出，而 Sun Studio在开发多线程程序（� ......
