C++ 库函数查询 CHM 格式 #, ## manipulate strings #define define variables #error display an error message #if, #ifdef, #ifndef, #else, #elif, #endif conditional operators #include insert the contents of another file #line set line and file information #pra
c语言库函数大全--资料收集 Turbo C 2.0 函数中文说明大全 分类函数,所在函数库为ctype.h int isalpha(int ch) 若ch是字母('A'-'Z','a'-'z')返回非0值,否则返回0 int isalnum(int ch) 若ch是字母('A'-'Z','a'-'z')或数字('0'-'9'),返回非0值,否则返回0 int isascii(int ch) 若ch是字符(ASCII码中的0-127)返回非0值,否则返回0 int iscntrl(int ch
时间函数举例程序分析 2.程序源代码： #include "stdio.h" #include "time.h" void main() { time_t lt; /*define a longint time varible*/ lt=time(NULL);/*system time and date*/ printf(ctime(<)); /*english format output*/ printf(asctime(localtime(<)));/* tranfer to
一本实用的C语言入门教程 英文版 Contents At a Glance Preface xvii 1 Introduction 1 2 Some Fundamentals 5 3 Compiling and Running Your First Program 11 4 Variables, Data Types, and Arithmetic Expressions 21 5 Program Looping 43 6 Making Decisions 65 7 Working with
