03 第三方訂閱轉換器計算器代碼(怎么用電腦計算器將帶小數的二進位制轉換為十進位制)

=='3') ret+="0011";

else if (ch[j]=='4') ret+="0100";

else if (ch[j]=='5') ret+="0101";

else if (ch[j]=='6') ret+="0110";

else if (ch[j]=='7') ret+="0111";

else if (ch[j]=='8') ret+="1000";

else if (ch[j]=='9') ret+="1001";

else if (ch[j]=='A'||ch[j]=='a') ret+="1010";

else if (ch[j]=='B'||ch[j]=='b') ret+="1011";

else if (ch[j]=='C'||ch[j]=='c') ret+="1100";

else if (ch[j]=='D'||ch[j]=='d') ret+="1101";

else if (ch[j]=='E'||ch[j]=='e') ret+="1110";

else if (ch[j]=='F'||ch[j]=='f') ret+="1111";

買粉絲ut<<"所得二進制為：";

買粉絲ut<<ret<<endl;

買粉絲ut<<"請按任意鍵返回\n";

getch();

system("cls");

mainmenu();

return 0;

}

int hex_dec()

{

//16->10

買粉絲ut<<"輸入十六進制";

char ch[N];

int b=0,a=0;

cin>>ch;

int i=0,flag=-1;

while(ch[i]!='\0')

{

if(ch[i]=='.')

{

flag=i;

break;

}

i++;

}

i=0;

if(flag==-1)

{ while(ch[i]!='\0')

{

if(ch[i]>='a'&&ch[i]<='f')

b=ch[i]-'a'+10;

else if(ch[i]>='A'&&ch[i]<='F')

b=ch[i]-'A'+10;

else if(ch[i]>='0'&&ch[i]<='9')

b=ch[i]-'0';

a=a*16+b;

i++;

}

買粉絲ut<<a<<endl;

買粉絲ut<<"請按任意鍵返回\n";

getch();

system("cls");

mainmenu();

return 0;

}

double 買粉絲unt=0.0;

double bin=1.0/16;

i=0;

int j;

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

{ if(ch[i]>='a'&&ch[i]<='f')

b=ch[i]-'a'+10;

else if(ch[i]>='A'&&ch[i]<='F')

b=ch[i]-'A'+10;

else if(ch[i]>='0'&&ch[i]<='9')

b=ch[i]-'0';

a=a*16+b;

}

int d=strlen(ch);

i=flag+1;

for(;i<d;i++)

{ if(ch[i]>='a'&&ch[i]<='f')

b=ch[i]-'a'+10;

else if(ch[i]>='A'&&ch[i]<='F')

b=ch[i]-'A'+10;

else if(ch[i]>='0'&&ch[i]<='9')

b=ch[i]-'0';

買粉絲unt=買粉絲unt+b*bin;

bin/=16.0;

if(j>Q)

break;

}

買粉絲ut<<"轉換后所得對應十進制為：";

買粉絲ut<<setiosflags(ios_base::fixed)<<setprecision(Q)<<(a+買粉絲unt)<<endl; //使用格式化輸出，使其保留Q，6位小數

買粉絲ut<<"請按任意鍵返回\n";

getch();

system("cls");

mainmenu();

return 0;

}

int dec_hex() //十進制到十六進制

{

char b[N];

char ch[N];

string all;

買粉絲ut<<"請輸入待轉換的十進制數：";

cin>>b;

long d=atol(b);

long bb=d;

int i=0,flag=-1;

int j;

while(ch[i]!='\0')

{

if(ch[i]=='.')

{

flag=i;

break;

}

i++;

}

i=0;

while(d!=0)

{ ch[i]=d%16+'0';

d=d/16;

all=ch[i]+all; //加在前面

i++;

}

if(flag==-1)

{ 買粉絲ut<<all<<endl;

買粉絲ut<<"請按任意鍵返回\n";

getch();

system("cls");

mainmenu();

return 0;

}

all=all+".";

double x=atof(b) ;

x=x-(double)bb;

int r=0;

while(1) //乘以16，取整數

{ if((int)(x*16.0)==0)

{

all=all+"0";

x=x*16.0-(int)(x*16.0);

r++;

}

else if((int)(x*16.0)==1)

{

all=all+"1";

x=x*16.0-(int)(x*16.0);

r++;

}

else if((int)(x*16.0)==2)

{

all=all+"2";

x=x*16.0-(int)(x*16.0);

r++;

}

else if((int)(x*16.0)==3)

{

all=all+"3";

x=x*16.0-(int)(x*16.0);

r++;

}

else if((int)(x*16.0)==4)

{

all=all+"4";

x=x*16.0-(int)(x*16.0);

r++;

}

else if((int)(x*16.0)==5)

{

all=all+"5";

x=x*16.0-(int)(x*16.0);

r++;

}

else if((int)(x*16.0)==6)

{

all=all+"6";

x=x*16.0-(int)(x*16.0);

r++;

}

else if((int)(x*16.0)==7)

{

all=all+"7";

x=x*16.0-(int)(x*16.0);

r++;

}

else if((int)(x*16.0)==8)

{

all=all+"8";<

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