#include stdio.h#include math.hint main () {double x, ret;x = 10000;/* finding value of log1010000 */

#includestdio.h#includemath.hint main () {double x, fractpart, intpart;x = 8.123456;fractpart = modf(x, intpart);

#include stdio.h#include math.hint main () {printf(Value 8.0 ^ 3 = %lf\\n, pow(8.0, 3));

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

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

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

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

// 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#include stdio.h#if !defined (MESSAGE)#define MESSAGE You wish!

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

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

// C语言访问存储的值#include stdio.hint main() {int a;int b;a = 10;b = 20;printf( Value of a = %d\\n, a );

// C语言整数变量// -----------------------------#include stdio.hint main() {int i;// integer variable declaration

// ----------------------------------------------#include stdio.hint main() {double d;// double precision variable declaration

// #include stdio.hint main() {int op1, op2, sum;// variable declarationop1 = 5;// variable definition

// C语言字符变量// ------------------------------------#include stdio.hint main() {char c;// char variable declaration

#include stdio.h#include string.hint main () {int len;const char str1[] = ABCDEF4960910;

#include stdio.h#include string.hint main () {char src[40];char dest[12];memset(dest, \\0, sizeof(dest));

// C语言读取文件#include stdio.hint main() {FILE *fp;char buff[255];fp = fopen(/tmp/test.txt, r);

#include stdio.h#include string.hint main () {const char haystack[20] = Yiibai Point;