.

{ do {

scanf(\ }while(a<1||a>50); for(i=1;i<=a;i++) printf(\printf(\n++;} getch(); }

==============================================================

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ÌâÄ¿£ºÄ³¸ö¹«Ë¾²ÉÓù«Óõ绰´«µÝÊý¾Ý£¬Êý¾ÝÊÇËÄλµÄÕûÊý£¬ÔÚ´«µÝ¹ý³ÌÖÐÊǼÓÃܵģ¬¼ÓÃܹæÔòÈçÏ£º

ÿλÊý×Ö¶¼¼ÓÉÏ5,È»ºóÓúͳýÒÔ10µÄÓàÊý´úÌæ¸ÃÊý×Ö£¬ÔÙ½«µÚһλºÍµÚËÄλ½»»»£¬µÚ¶þλºÍµÚÈýλ½»»»¡£ 1.³ÌÐò·ÖÎö£º 2.³ÌÐòÔ´´úÂ룺 main()

{int a,i,aa[4],t; scanf(\aa[0]=a; aa[1]=a0/10; aa[2]=a00/100; aa[3]=a/1000; for(i=0;i<=3;i++) {aa[i]+=5; aa[i]%=10; }

for(i=0;i<=3/2;i++) {t=aa[i];

aa[i]=aa[3-i]; aa[3-i]=t; }

for(i=3;i>=0;i--) printf(\}

==============================================================

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ÌâÄ¿£º×¨Éý±¾Ò»Ì⣬¶Á½á¹û¡£ 1.³ÌÐò·ÖÎö£º 2.³ÌÐòÔ´´úÂ룺 #include \

.

.

#define m 5 main()

{int a[m]={1,2,3,4,5}; int i,j,t; i=0;j=m-1; while(i{t=*(a+i); *(a+i)=*(a+j); *(a+j)=t; i++;j--; }

for(i=0;iprintf(\}

¡¾³ÌÐò91¡¿

ÌâÄ¿£ºÊ±¼äº¯Êý¾ÙÀý1 1.³ÌÐò·ÖÎö£º 2.³ÌÐòÔ´´úÂ룺 #include \#include \void main()

{ time_t lt; /*define a longint time varible*/ lt=time(null);/*system time and date*/ printf(ctime(<)); /*english format output*/ printf(asctime(localtime(<)));/*tranfer to tm*/

printf(asctime(gmtime(<))); /*tranfer to greenwich time*/ }

==============================================================

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ÌâÄ¿£ºÊ±¼äº¯Êý¾ÙÀý2

1.³ÌÐò·ÖÎö£º 2.³ÌÐòÔ´´úÂ룺 /*calculate time*/ #include \#include \main()

{ time_t start,end; int i;

start=time(null); for(i=0;i<3000;i++)

{ printf(\end=time(null);

printf(\}

===========================================================

.

.

===

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ÌâÄ¿£ºÊ±¼äº¯Êý¾ÙÀý3 1.³ÌÐò·ÖÎö£º 2.³ÌÐòÔ´´úÂ룺 /*calculate time*/ #include \#include \main()

{ clock_t start,end; int i;

double var; start=clock();

for(i=0;i<10000;i++)

{ printf(\end=clock();

printf(\}

==============================================================

¡¾³ÌÐò94¡¿

ÌâÄ¿£ºÊ±¼äº¯Êý¾ÙÀý4,Ò»¸ö²ÂÊýÓÎÏ·£¬ÅжÏÒ»¸öÈË·´Ó¦¿ìÂý¡££¨°æÖ÷³õѧʱ±àµÄ£© 1.³ÌÐò·ÖÎö£º 2.³ÌÐòÔ´´úÂ룺 #include \#include \#include \main() {char c;

clock_t start,end; time_t a,b; double var; int i,guess;

srand(time(null));

printf(\loop:

while((c=getchar())=='y') {

i=rand()0;

printf(\start=clock(); a=time(null);

scanf(\while(guess!=i)

.

.

{if(guess>i)

{printf(\scanf(\else

{printf(\scanf(\}

end=clock(); b=time(null);

printf(\printf(\if(var<15)

printf(\else if(var<25)

printf(\else

printf(\printf(\printf(\}

printf(\if((c=getch())=='y') goto loop; }

==============================================================

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ÌâÄ¿£º¼ÒÍ¥²ÆÎñ¹ÜÀíС³ÌÐò 1.³ÌÐò·ÖÎö£º 2.³ÌÐòÔ´´úÂ룺

/*money management system*/ #include \#include \main() {

file *fp;

struct date d;

float sum,chm=0.0; int len,i,j=0; int c;

char ch[4]=\pp: clrscr(); sum=0.0;

gotoxy(1,1);printf(\

.