void main() { a=b=4; add();
printf(\}
题目:学习使用register定义变量的方法。
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程序源代码: void main() {
register int i; int tmp=0;
for(i=1;i<=100;i++) tmp+=i;
printf(\}
题目:宏#define命令练习(1)
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程序源代码:
#include \#define TRUE 1 #define FALSE 0
#define SQ(x) (x)*(x) void main() {
int num;
int again=1;
printf(\while(again) {
printf(\scanf(\
printf(\if(num>=50)
again=TRUE; else
again=FALSE; } }
题目:宏#define命令练习(2)
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程序源代码:
#include \
#define exchange(a,b)
{ \\ /*宏定义中允许包含两道衣裳命令的情形,此时必须在最右边加上\ int t;\\ t=a;\\ a=b;\\ b=t;\\ }
void main(void) {
int x=10; int y=20;
printf(\exchange(x,y);
printf(\}
题目:宏#define命令练习(3)
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程序源代码: #define LAG > #define SMA < #define EQ ==
#include \void main() { int i=10; int j=20;
if(i LAG j)
printf(\else if(i EQ j)
printf(\else if(i SMA j)
printf(\else
printf(\}
题目:#if #ifdef和#ifndef的综合应用。
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程序源代码:
#include \#define MAX
#define MAXIMUM(x,y) (x>y)?x:y #define MINIMUM(x,y) (x>y)?y:x void main()
{ int a=10,b=20; #ifdef MAX
printf(\#else
printf(\#endif
#ifndef MIN
printf(\#else
printf(\#endif
#undef MAX #ifdef MAX
printf(\#else
printf(\#endif
#define MIN #ifndef MIN
printf(\#else
printf(\#endif
}
题目:#include 的应用练习
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程序源代码:
test.h 文件如下: #define LAG > #define SMA < #define EQ ==
#include \一个新文件50.c,包含test.h*/ #include \void main() { int i=10; int j=20; if(i LAG j)
printf(\else if(i EQ j)
printf(\else if(i SMA j)
printf(\else
printf(\}
题目:学习使用按位与 & 。
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程序分析:0&0=0; 0&1=0; 1&0=0; 1&1=1
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程序源代码:
#include \main() {
int a,b; a=077;