#include stdio.hconst int MAX = 3;int main () {intvar[] = {10, 100, 200};int i;for (i = 0; i MAX; i++) {

#include stdio.h#include string.hstruct Books {chartitle[50];charauthor[50];charsubject[100];

#include stdio.h#include string.hunion Data {int i;float f;char str[20];};int main( ) {

#include stdio.h#include string.hunion Data {int i;float f;char str[20];};int main( ) {

#include stdio.h#include string.h/* define simple structure */struct {unsigned int widthValidated;

#include stdio.h#include string.hstruct Books {chartitle[50];charauthor[50];charsubject[100];

#include stdio.hint main () {/* local variable definition */int a = 10;/* do loop execution */

#include stdio.h/* function declaration */int max(int num1, int num2);int main () {/* local variable definition */

#include stdio.hint main () {int n[ 10 ]; /* n is an array of 10 integers */int i,j;/* initialize elements of array n to 0 */

#include stdio.h/* global variable declaration */int a = 20;int main () {/* local variable declaration in main function */

#include stdio.h/* global variable declaration */int g;int main () {/* local variable declaration */

#include stdio.hint main () {/* local variable declaration */int a, b;int c;/* actual initialization */

#include stdio.hint main () {intvar = 20;/* actual variable declaration */int*ip;/* pointer variable declaration */

#include stdio.hint main () {intvar1;char var2[10];printf(Address of var1 variable: %x\\n, var1);

#include stdio.hint main () {/* an array with 5 elements */double balance[5] = {1000.0, 2.0, 3.4, 17.0, 50.0};

#include stdio.hint main () {/* an array with 5 rows and 2 columns*/int a[5][2] = { {0,0}, {1,2}, {2,4}, {3,6},{4,8}};

#include stdio.hconst int MAX = 3;int main () {intvar[] = {10, 100, 200};inti, *ptr;/* let us have address of the first element in pointer */

#include stdio.hconst int MAX = 3;int main () {intvar[] = {10, 100, 200};inti, *ptr;/* let us have array address in pointer */

// C语言NULL指针 // C语言NULL指针 --------------------#include stdio.hint main () {int*ptr = NULL;

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