实例代码_第102页-得得之家

C语言库ldexp()函数

#include stdio.h#include math.hint main () {double x, ret;int n;x = 0.65;n = 3;ret = ldexp(x ,n);

C语言库frexp()函数

#include stdio.h#include math.hint main () {double x = 1024, fraction;int e;fraction = frexp(x, e);

C语言库exp()函数

#include stdio.h#include math.hint main () {double x = 0;printf(The exponential value of %lf is %lf\\n, x, exp(x));

C语言isalnum()库函数

// C语言库isalnum()函数#include stdio.h#include ctype.hint main () {int var1 = d;

C语言参数化宏

// C语言参数化宏 // -----------------------------#include stdio.h#define MAX(x,y) ((x) (y) ? (x) : (y))

C语言defined()运算符

// C语言defined()运算符#include stdio.h#if !defined (MESSAGE)#define MESSAGE You wish!

C语言Stringize（＃）运算符

#include stdio.h// --------------------------------#definemessage_for(a, b)\\printf(#a and #b : We love you!\\n)

C语言islower()库函数

#include stdio.h#include ctype.hint main () {int var1 = Q;int var2 = q;

C语言库free()函数

#include stdio.h#include stdlib.h#include string.hint main () {char *str;/* Initial memory allocation */

C语言库strtoul()函数

//------------------------#include stdio.h#include stdlib.hint main () {char str[30] = 2030300 This is test;