C语言程序设计100个经典例子

#include \main()

{ clock_t start,end; int i;

double var; start=clock();

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

{ printf(\end=clock();

printf(\}

============================================================== 【程序94】

题目：时间函数举例4,一个猜数游戏，判断一个人反应快慢。（版主初学时编的） 1.程序分析： 2.程序源代码： #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; }

============================================================== 【程序95】

题目：家庭财务管理小程序 1.程序分析： 2.程序源代码：

/*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(\gotoxy(1,2);printf(\

gotoxy(1,3);printf(\gotoxy(1,4);printf(\

gotoxy(1,5);printf(\gotoxy(1,6);printf(\gotoxy(1,7);printf(\

gotoxy(1,8);printf(\

gotoxy(1,9);printf(\gotoxy(1,10);printf(\

gotoxy(1,11);printf(\gotoxy(1,12);printf(\gotoxy(1,13);printf(\

gotoxy(1,14);printf(\gotoxy(1,15);printf(\gotoxy(1,16);printf(\gotoxy(1,17);printf(\gotoxy(1,18);printf(\gotoxy(1,19);printf(\gotoxy(1,20);printf(\gotoxy(1,21);printf(\gotoxy(1,22);printf(\

gotoxy(1,23);printf(\i=0;

getdate(&d);

sprintf(chtime,\for(;;) {

gotoxy(3,24);printf(\gotoxy(13,10);printf(\gotoxy(13,13);printf(\

gotoxy(13,7);printf(\j=18;

ch[0]=getch(); if(ch[0]==27) break;

strcpy(chshop,\strcpy(chmoney,\if(ch[0]==9) {

mm:i=0;

fp=fopen(\gotoxy(3,24);printf(\

gotoxy(6,4);printf(\

gotoxy(1,5);printf(\gotoxy(41,4);printf(\gotoxy(41,5);printf(\

while(fscanf(fp,\{ if(i==36) { getch(); i=0;}

if ((i6)<17) { gotoxy(4,6+i); printf(\

gotoxy(4,6+i);} else

if((i6)>16)

{ gotoxy(41,4+i-17); printf(\

gotoxy(42,4+i-17);} i++;

sum=sum+chm;

printf(\

gotoxy(1,23);printf(\gotoxy(1,24);printf(\

gotoxy(1,25);printf(\gotoxy(10,24);printf(\fclose(fp);

gotoxy(49,24);printf(\} else {

while(ch[0]!='\\r') { if(j<10)

{ strncat(chtime,ch,1); j++;}

if(ch[0]==8) {

len=strlen(chtime)-1; if(j>15)

{ len=len+1; j=11;} strcpy(ch1,\j=j-2;

strncat(ch1,chtime,len); strcpy(chtime,\

strncat(chtime,ch1,len-1); gotoxy(13,7);printf(\

gotoxy(13,7);printf(\if(ch[0]==9) goto mm; if(ch[0]==27) exit(1); }

gotoxy(3,24);printf(\gotoxy(13,10); j=0;

ch[0]=getch(); while(ch[0]!='\\r')