实例代码_第123页-得得之家

C语言库tolower()函数

#include stdio.h#include ctype.hint main () {int i = 0;char c;char str[] = TUTORIALS POINT;

C语言库toupper()函数

#include stdio.h#include ctype.hint main () {int i = 0;char c;char str[] = Tutorials Point;

C语言字符串函数

#include stdio.h#include string.hint main () {char str1[12] = Hello;char str2[12] = World;

C语言字符串列表

#include stdio.hconst int MAX = 4;int main () {char *names[] = {Zara Ali,Hina Ali,

C语言指针的指针

#include stdio.hint main () {intvar;int*ptr;int**pptr;var = 3000;/* take the address of var */

C语言接受一个指针

#include stdio.h/* function declaration */double getAverage(int *arr, int size);int main () {

C语言从函数返回指针

#include stdio.h#include time.h/* function to generate and return random numbers. */int * getRandom( ) {

C语言位域声明

#include stdio.h#include string.hstruct {unsigned int age : 3;} Age;int main( ) {Age.age = 4;

C语言typedef与#define

// -------------------------------------#include stdio.h#define TRUE1#define FALSE 0int main( ) {

C语言预定义的宏

// --------------------------------------#include stdio.hmain() {printf(File :%s\\n, __FILE__ );