C ++程序将二进制数转换为八进制，反之亦然
在计算机系统中，二进制数字以二进制数字系统表示，而八进制数字以八进制数字系统表示。二进制数以2为底，八进制数以8为底。
二进制数及其对应的八进制数的示例如下-
给出了将二进制数转换为八进制并将八进制数转换为二进制的程序，如下所示：
示例
#include <iostream>
#include <cmath>
using namespace std;
int BinarytoOctal(int binaryNum) {
int octalNum = 0, decimalNum = 0, count = 0;
while(binaryNum != 0) {
decimalNum += (binaryNum%10) * pow(2,count);
++count;
binaryNum/=10;
}
count = 1;
while (decimalNum != 0) {
octalNum += (decimalNum % 8) * count;
decimalNum /= 8;
count *= 10;
}
return octalNum;
}
int OctalToBinary(int octalNum) {
int decimalNum = 0, binaryNum = 0, count = 0;
while(octalNum != 0) {
decimalNum += (octalNum%10) * pow(8,count);
++count;
octalNum/=10;
}
count = 1;
while (decimalNum != 0) {
binaryNum += (decimalNum % 2) * count;
decimalNum /= 2;
count *= 10;
}
return binaryNum;
}
int main() {
int binaryNum = 1011, octalNum = 25;
cout <<"Binary to Octal"<<endl;
cout<<"Binary number: "<<binaryNum<<endl;
cout<<"Octal number: "<<BinarytoOctal(binaryNum)<<endl;
cout <<"Octal to Binary"<<endl;
cout<<"Octal number: "<<octalNum<<endl;
cout<<"Binary number: "<<OctalToBinary(octalNum)<<endl;
return 0;
}输出结果
上面程序的输出如下-
Binary to Octal Binary number: 1011 Octal number: 13 Octal to Binary Octal number: 25 Binary number: 10101
在以上程序中，有两个功能BinaryToOctal()和OctalToBinary()。
BinaryToOctal()将给定的二进制数转换为八进制数。首先将二进制数字转换为十进制数字，然后将十进制数字转换为八进制数字。在以下代码片段中可以看到-
int BinaryToOctal(int binaryNum) {
int octalNum = 0, decimalNum = 0, count = 0;
while(binaryNum != 0) {
decimalNum += (binaryNum%10) * pow(2,count);
++count;
binaryNum/=10;
}
count = 1;
while (decimalNum != 0) {
octalNum += (decimalNum % 8) * count;
decimalNum /= 8;
count *= 10;
}
return octalNum;
}OctalToBinary()将给定的八进制数转换为二进制数，方法是先将八进制数转换为十进制数，然后将十进制数转换为二进制数。在以下代码片段中可以看到-
int OctalToBinary(int octalNum) {
int decimalNum = 0, binaryNum = 0, count = 0;
while(octalNum != 0) {
decimalNum += (octalNum%10) * pow(8,count);
++count;
octalNum/=10;
}
count = 1;
while (decimalNum != 0) {
binaryNum += (decimalNum % 2) * count;
decimalNum /= 2;
count *= 10;
}
return binaryNum;
}在函数中main()，给出了二进制数和八进制数。然后分别通过BinaryToOctal()和来计算它们对应的八进制数和二进制数OctalToBinary()。这如下所示-
int main() {
int binaryNum = 1011, octalNum = 25;
cout <<"Binary to Octal"<<endl;
cout<<"Binary number: "<<binaryNum<<endl;
cout<<"Octal number: "<<BinarytoOctal(binaryNum)<<endl;
cout <<"Octal to Binary"<<endl;
cout<<"Octal number: "<<octalNum<<endl;
cout<<"Binary number: "<<OctalToBinary(octalNum)<<endl;
return 0;
}