博文
求二次方程的根的问题(2005-04-02 20:42:00)
摘要：#include<stdio.h>
#include"math.h"
void seekroot (float a,float b,float c)
{
float m,term1,term2;
if(a==0)
if(b==0)
printf("the answer not exist.\n");
else printf("the answer is %f\n",-c/b);
else
{
m=b*b-4*a*c;
if(m>0)
{
term1=(-b+sqrt(m))/(2*a);
term2=(-b-sqrt(m))/(2*a);
printf("the root is %f and %f",term1,term2);}
else printf("the real root not exsit !\n");
}
}
main()
{
float d,e,f;
printf("please input three numbers;\n");
scanf("%f%f%f",&d,&e,&f);
seekroot(d,e,f);
......
起泡法排序(2005-04-02 20:40:00)
摘要：#include<stdio.h>
void enter(float a[],int n)
{
int i;
printf("please input numbers:\n");
for(i=0;i<n;i++)
scanf("%f",&a[i]);
printf("\nthe origin numers are:\n");
for(i=0;i<n;i++)
printf("%f",a[i]);
printf("\n");
return;
}
void bubble(float a[],int n)
{
int i,j,t,m;
float k;
for(i=0;i<n;i++)
{
t=n-i-1;
for(j=0;j<t;j++)
if(a[j]>a[j+1])
{
k=a[j];
a[j]=a[j+1];
a[j+1]=k;
}
}
printf("the versed numbers are:\n");
for(m=0;m<n;m++)
printf("%f",a[m]);
printf("\n");
}
main()
{
int n;
float a[12];
printf("how many numbers do you want to input?number:\n");
scanf("%d",&n);
enter(a,n);
bubble(a,n);
......
兔子繁殖问题(2005-04-02 20:39:00)
摘要：#include<stdio.h>
void trade (a,b,c)
{
b=c;
a=b;
}
main()
{
int n,i,fbn,fbn1,fbn2;
printf("please input the month which you want to know:");
scanf("%d\n",&n);
if(n>13 || n<1)
printf("error due to the wrong input !\n");
else if(n==1|| n==2)
printf("the total number of the rabbits are 1.\n");
else
fbn1=fbn2=1;
for(i=3;i<=n;i++)
{
fbn=fbn1+fbn2;
fbn2=fbn1;
fbn1=fbn;
}
&nb......
将十进制数转化为８进制(2005-04-02 20:38:00)
摘要：#define STACK_INIT_SIZE 8
#define STACKINCRMENENT 4
#include <stdio.h>
#include<math.h>
typedef struct{
int *base;
int *top;
int stacksize;
}sqstack;
typedef sqstack *stacklist;
stacklist p;
stacklist initstack (stacklist p)
{
p->base=(int *)malloc(STACK_INIT_SIZE *sizeof(int));
if(!p->base)
{
printf("overflow!\n");
exit(0);
}
p->top=p->base;
p->stacksize=STACK_INIT_SIZE ;
printf("succeed in applying for a room!\n");
return(p);
}
stacklist push (stacklist p,int m)
{
if(p->top-p->base>=p->stacksize)
{
p->base=(int *)realloc(p->base,(p->stacksize+STACKINCRMENENT)*sizeof(int));
if(!p->base)
{
printf("overflow leads to failure!\n");
exit(0);
&nb......