编程实现各进制转换

#include

#include

#include

#include

#define N 40

int Judge(char r,char number[]);

int Poro(char number[],int flag);

double Allgoten(char number[],int r);

int Div(float num);

int TenFgo(double c,int r,int ax[]);

int TenIgo(long d,int r,int a[]);

void PNrint(int x);

void Print(int flag,int a[],int ax[],int an,int b);

int main()

{

int q, w;

char op,number[N],r;

int rnq,rnh,ret,a[N],ax[N],counti,countf,flag=1;

long d,sumi;

double num,n,c,sumf;

printf( "*****************************\n" );

printf( "1.五进制转化\n" );

printf( "2.八进制转化\n" );

printf( "3.十进制转化\n" );

printf( "4.十二进制转化\n" );

printf( "5.十六进制转化\n" );

printf( "0.退出\n");

printf( "*****************************\n" );

printf( "请输入功能号：\n");

scanf("%d",&q);

if (q > 5 || q < 0)

{

printf("输入错误，请重新输入：\n");

scanf("%d",&q);

}

else if (q == 1)

{

printf("*****************************\n" );

printf( "1.五进制转八进制\n");

printf( "2.五进制转十进制\n");

printf( "3.五进制转十二进制\n");

printf( "4.五进制转十六进制\n");

printf( "0.返回上一级\n");

printf("*****************************\n");

printf( "请输入功能号：\n");

scanf("%d",&w);

while (w > 4 || w < 0)

{

printf("输入错误，请重新输入：\n");

scanf("%d",&w);

}

}

else if (q == 2)

{

printf("*****************************\n" );

printf( "1.八进制转五进制\n");

printf( "2.八进制转十进制\n" );

printf( "3.八进制转十二进制\n" );

printf( "4.八进制转十六进制\n");

printf( "0.返回上一级\n" );

printf("*****************************\n" );

printf( "请输入功能号：\n");

scanf("%d",&w);

while (w > 4 || w < 0)

{

printf("输入错误，请重新输入：\n");

scanf("%d",&w);

}

}

else if (q == 3)

{

printf("*****************************\n" );

printf( "1.十进制转五进制\n" );

printf( "2.十进制转八进制\n" );

printf( "3.十进制转十二进制\n");

printf( "4.十进制转十六进制\n");

printf( "0.返回上一级\n");

printf( "请输入功能号：\n");

scanf("%d",&w);

while (w > 4 || w < 0)

{

printf("输入错误，请重新输入：\n");

scanf("%d",&w);

}

}

else if (q == 4)

{

printf("*****************************\n" );

printf( "1.十二进制转五进制\n" );

printf( "2.十二进制转八进制\n" );

printf( "3.十二进制转十进制\n" );

printf( "4.十二进制转十六进制\n");

printf( "0.返回上一级\n");

printf("*****************************\n" );

printf( "请输入功能号：\n" );

scanf("%d",&w);

while (w > 4 || w < 0)

{

printf("输入错误，请重新输入：\n");

scanf("%d",&w);

}

}

else if (q == 5)

{

printf("*****************************\n" );

printf( "1.十六进制转五进制\n" );

printf( "2.十六进制转八进制\n" );

printf( "3.十六进制转十进制\n" );

printf( "4.十六进制转十二进制\n");

printf( "0.返回上一级\n" );

printf( "请输入功能号：\n" );

scanf("%d",&w);

while (w > 4 || w < 0)

{

printf("输入错误，请重新输入：\n");

scanf("%d",&w);

}

}

if(q==1&&w==1)

{r='5',rnq=5,rnh=8;}

else if(q==1&&w==2)

{r='5',rnq=5,rnh=10;}

else if(q==1&&w==3)

{r='5',rnq=5,rnh=12;}

else if(q==1&&w==4)

{r='5',rnq=5,rnh=16;}

else if(q==2&&w==1)

{r='8',rnq=8,rnh=5;}

else if(q==2&&w==2)

{r='8',rnq=8,rnh=10;}

else if(q==2&&w==3)

{r='8',rnq=8,rnh=12;}

else if(q==2&&w==4)

{r='8',rnq=8,rnh=16;}

else if(q==3&&w==1)

{r='A',rnq=10,rnh=5;}

else if(q==3&&w==2)

{r='A',rnq=10,rnh=8;}

else if(q==3&&w==3)

{r='A',rnq=10,rnh=12;}

else if(q==3&&w==4)

{r='A',rnq=10,rnh=16;}

else if(q==4&&w==1)

{r='C',rnq=12,rnh=5;}

else if(q==4&&w==2)

{r='C',rnq=12,rnh=8;}

else if(q==4&&w==3)

{r='C',rnq=12,rnh=10;}

else if(q==4&&w==4)

{r='C',rnq=12,rnh=16;}

else if(q==5&&w==1)

{r='G',rnq=16,rnh=5;}

else if(q==5&&w==2)

{r='G',rnq=16,rnh=8;}

else if(q==5&&w==3)

{r='G',rnq=16,rnh=10;}

else if(q==5&&w==4)

{r='G',rnq=16,rnh=12;}

else

printf("Error!\n");

printf("Please input the number :");

ret=Judge(r,number);

while(ret<0)

{

while(getchar()!='\n');

printf("Error!Please input the number again:");

ret=Judge(r,number);

}

flag=Poro(number,flag);

n=Allgoten(number,rnq);

d=Div(n);

c=n-d;

counti=TenIgo(d,rnh,a);

countf=TenFgo(c,rnh,ax);

Print(flag,a,ax,counti,countf);

}

int Div(float num)

{

int d;

d=(int)num;

return d;

}

int TenFgo(double c,int r,int ax[])

{

double x=c*r;

int i,a,count=0;

for(i=0; x>1e-6; i++)

{

x=c*r;

a=(int)(x);

c=x-a;

ax[i]=a;

count++;

}

return count;

}

int TenIgo(long d,int r,int a[])

{

int i,an,count=0;

for(i=0; d>=1; i++)

{

an=d%r;

d=d/r;

a[i]=an;

count++;

}

return count;

}

double Allgoten(char number[],int r) {

int a=0,nu[N],i;

double x,suml=0,sumf=0;

for(i=0; number[i]!='\0'; i++)

{

if(number[i]=='0')

{

nu[i]=0;

continue;

}

if(number[i]=='1')

{

nu[i]=1;

continue;

}

if(number[i]=='2')

{

nu[i]=2;

continue;

}

if(number[i]=='3')

{

nu[i]=3;

continue;

}

if(number[i]=='4')

{

nu[i]=4;

continue;

}

if(number[i]=='5')

{

nu[i]=5;

continue;

}

if(number[i]=='6')

{

nu[i]=6;

continue;

}

if(number[i]=='7')

{

nu[i]=7;

continue;

}

if(number[i]=='8')

{

nu[i]=8;

continue;

}

if(number[i]=='9')

{

nu[i]=9;

continue;

}

if(number[i]=='A'||number[i]=='a') {

nu[i]=10;

continue;

}

if(number[i]=='B'||number[i]=='b') {

nu[i]=11;

continue;

}

if(number[i]=='C'||number[i]=='c')

{

nu[i]=12;

continue;

}

if(number[i]=='D'||number[i]=='d')

{

nu[i]=13;

continue;

}

if(number[i]=='E'||number[i]=='e')

{

nu[i]=14;

continue;

}

if(number[i]=='F'||number[i]=='f')

{

nu[i]=15;

continue;

}

}

for(i=0; number[i]!='.'&&number[i]!='\0'; i++)

{

a++;

}

for(i=0; number[i]!='.'&&number[i]!='\0'; i++)

{

suml+=nu[i]*pow((double)r,(double)a-1-i);

}

if(number[a]=='\0')

{

sumf=0;

}

else

{

for(i=a+1; number[i]!='\0'; i++)

{

sumf+=nu[i]/pow((double) r,(double)(i-a));

}

}

x=suml+sumf;

return x;

}

int Judge(char r,char number[]) {

int i;

scanf("%s",number);

for(i=0; number[i]!='\0'; i++)

{

if(number[i]>=r)

return -1;

}

return 1;

}

int Poro(char number[],int flag) {

if(number[0]=='-')

flag=0;

return flag;

}

void PNrint(int x)

{

if(x==10)

{

printf("A");

}

else if(x==11)

{

printf("B");

}

else if(x==12)

{

printf("C");

}

else if(x==13)

{

printf("D");

}

else if(x==14)

{

printf("E");

}

else if(x==15)

{

printf("F");

}

else

{

printf("%d",x);

}

}

void Print(int flag,int a[],int ax[],int an,int b) {

int i;

if(flag==0)

{

printf("-");

}

for(i=an-1; i>=0; i--)

{

PNrint(a[i]);

}

if(b!=0)

{

printf(".");

}

for(i=0; i

{

PNrint(ax[i]);

}

printf("\n");

}