C语言
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C库函数isspace()-C语言实例教程|
C库函数 isspace() #include stdio.h #include ctype.h int main () { int var1 = t ; int var2 = 1 ; int var3 = ; if ( isspace ( var1 ) ) { printf ( var1 = |%c| is a white-space chara...
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C库函数ispunct()-C语言实例教程|
C库函数 ispunct() #include stdio.h #include ctype.h int main () { int var1 = t ; int var2 = 1 ; int var3 = / ; int var4 = ; if ( ispunct ( var1 ) ) { printf ( var1 = |%c| is a pu...
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C库函数isprint()-C语言实例教程|
C库函数 isprint() #include stdio.h #include ctype.h int main () { int var1 = k ; int var2 = 8 ; int var3 = ; int var4 = ; if ( isprint ( var1 ) ) { printf ( var1 = |%c| can be pr...
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C库函数islower()-C语言实例教程|
C库函数 islower() #include stdio.h #include ctype.h int main () { int var1 = Q ; int var2 = q ; int var3 = 3 ; if ( islower ( var1 ) ) { printf ( var1 = |%c| is lowercase charact...
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C库函数isgraph()-C语言实例教程|
C库函数 isgraph() #include stdio.h #include ctype.h int main () { int var1 = 3 ; int var2 = m ; int var3 = ; if ( isgraph ( var1 ) ) { printf ( var1 = |%c| can be printed , var1 ...
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C库函数isdigit()-C语言实例教程|
C库函数 isdigit() #include stdio.h #include ctype.h int main () { int var1 = h ; int var2 = 2 ; if ( isdigit ( var1 ) ) { printf ( var1 = |%c| is a digit , var1 ); } else { print...
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C库函数iscntrl()-C语言实例教程|
C库函数 iscntrl() #include stdio.h #include ctype.h int main () { int i = 0 , j = 0 ; char str1 [] = all about programming ; char str2 [] = tutorials point ; /* Prints string til...
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C库函数isalpha()-C语言实例教程|
C库函数 isalpha() #include stdio.h #include ctype.h int main () { int var1 = d ; int var2 = 2 ; int var3 = ; int var4 = ; if ( isalpha ( var1 ) ) { printf ( var1 = |%c| is an alp...
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C库函数isalnum()-C语言实例教程|
C库函数 isalnum() #include stdio.h #include ctype.h int main () { int var1 = d ; int var2 = 2 ; int var3 = ; int var4 = ; if ( isalnum ( var1 ) ) { printf ( var1 = |%c| is alphan...
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参数化宏-C语言实例教程|
参数化宏 #include stdio.h #define MAX(x,y) ((x) (y) ? (x) : (y)) int main ( void ) { printf ( Max between 20 and 10 is %d , MAX ( 10 , 20 )); return 0 ; }...
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Defined()操作符-C语言实例教程|
Defined() 操作符 #include stdio.h #if !defined (MESSAGE) #define MESSAGE You wish! #endif int main ( void ) { printf ( Here is the message: %s , MESSAGE ); return 0 ; }...
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令牌粘贴（##）运算符-C语言实例教程|
令牌粘贴（##）运算符 #include stdio.h #define tokenpaster(n) printf (token #n = %d, token##n) int main ( void ) { int token34 = 40 ; tokenpaster ( 34 ); return 0 ; }...
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Stringize（＃）运算符-C语言实例教程|
Stringize（＃）运算符 #include stdio.h #define message_for(a, b) printf ( # a and # b : We love you! ) int main ( void ) { message_for ( Carole , Debra ); return 0 ; }...
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预定义的宏-C语言实例教程|
预定义的宏 #include stdio.h main () { printf ( File :%s , __FILE__ ); printf ( Date :%s , __DATE__ ); printf ( Time :%s , __TIME__ ); printf ( Line :%d , __LINE__ ); printf ( A...
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typedefvs#define-C语言实例教程|
typedef vs #define #include stdio.h #define TRUE 1 #define FALSE 0 int main ( ) { printf ( Value of TRUE : %d , TRUE ); printf ( Value of FALSE : %d , FALSE ); return 0 ; }...
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typedef-C语言实例教程|
typedef #include stdio.h #include string.h typedef struct Books { char title [ 50 ]; char author [ 50 ]; char subject [ 100 ]; int book_id ; } Book ; int main ( ) { Book book ; strc...
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位域声明-C语言实例教程|
位域声明 #include stdio.h #include string.h struct { unsigned int age : 3 ; } Age ; int main ( ) { Age . age = 4 ; printf ( Sizeof( Age ) : %d , sizeof ( Age ) ); printf ( Age.a...
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位域-C语言实例教程|
位域 #include stdio.h #include string.h /* define simple structure */ struct { unsigned int widthValidated ; unsigned int heightValidated ; } status1 ; /* define a structure with ...
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一次使用一个变量-C语言实例教程|
一次使用一个变量 #include stdio.h #include string.h union Data { int i ; float f ; char str [ 20 ]; }; int main ( ) { union Data data ; data . i = 10 ; printf ( data.i : %d ...
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访问联合体成员-C语言实例教程|
访问联合体成员 #include stdio.h #include string.h union Data { int i ; float f ; char str [ 20 ]; }; int main ( ) { union Data data ; data . i = 10 ; data . f = 220.5 ; strcp...