c99

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Define a function before main?

Are function declarations/prototypes necessary in C99 ? I am currently defining my functions in a header file and #include-ING it in the main file. Is this OK in C99 ?[详细]

2023-01-23 17:33 分类：问答
Writing string to file that is over 4095 characters long

I am building a distributed messaging system for users to send messages to each other on different linux terminals. The scenario that I am looking at for my question is when I try to write a string to[详细]

2023-01-22 15:50 分类：问答
How to implement memmove in standard C without an intermediate copy?

From the man page on my system: void *memmove(void *dst, const void *src, size_t len); DESCRIPTION The memmove() function copies len bytes from string src to string dst.[详细]

2023-01-22 05:17 分类：问答
Getting list of files in a folder using C

I have path to a folder for example /myfolder or in Windows: C:\\myfolder and I want to get a list of all files in that folder. How shall I do so in C?[详细]

2023-01-21 23:15 分类：问答
how to get the x to the pow y in C under c99 standard

I have #include<math.h>, and I tried to use pow(x, y) and powf(x, y). but it seems neither of them are under c99 standard.[详细]

2023-01-21 22:01 分类：问答
Straight GDI Programming in C on Windows

I have taken a recent interest in programming as efficiently as possible for Windows in straight C. I still want a GUI for some things, is the Windows API/GDI still the respectable way to go about thi[详细]

2023-01-21 15:12 分类：问答
32 bit Windows and the 2GB file size limit (C with fseek and ftell)

I am attempting to port a small data analysis program from a 64 bit UNIX to a 32 bit Windows XP system (don\'t ask :)).[详细]

2023-01-21 09:56 分类：问答
size limit of printf conversion specification

printf conversion specifications are % followed by flags, width, precision, length m开发者_如何学Goodifier and conversion specifier. Is there practical limit to size of a conversion specification?[详细]

2023-01-21 02:59 分类：问答
What is the difference between "Real Types" and "Arithmetic Types" in C?

The C99 standard describes them as so: The integer and real floating types are collectively called real type开发者_StackOverflows.[详细]

2023-01-19 17:06 分类：问答
Kind of sparse initialization for structures, any resources?

I used to initialize my structures in this way: st开发者_如何学运维ruct A a = {0}; This seems to work for me, however I was argued about ANSI C, C89, C99 standard.[详细]

2023-01-19 14:05 分类：问答