C 语言实例 - 八进制与二进制相互转换 八进制与二进制相互转换。 实例 - 二进制转换为八进制 #include stdio.h#include math.h int convertBinarytoOctal(long long binaryNumber);int main(){ long long binaryNumber; printf("输入一个二进制数: "); scanf("%lld", binaryNumber); printf("二进制数 %lld 转换为八进制为 %d", binaryNumber, convertBinarytoOctal(binaryNumber)); return 0;} int convertBinarytoOctal(long long binaryNumber){ int octalNumber = 0, decimalNumber = 0, i = 0; while(binaryNumber != 0) { decimalNumber += (binaryNumber%10) * pow(2,i); ++i; binaryNumber/=10; } i = 1; while (decimalNumber != 0) { octalNumber += (decimalNumber % 8) * i; decimalNumber /= 8; i *= 10; } return octalNumber;} 尝试一下 输出结果为： 输入一个二进制数: 101001二进制数 101001 转换为八进制为 51 实例 - 八进制转换为二进制 #include stdio.h#include math.h long long convertOctalToBinary(int octalNumber);int main(){ int octalNumber; printf("输入一个八进制数: "); scanf("%d", octalNumber); printf("八进制数 %d 转二进制为 %lld", octalNumber, convertOctalToBinary(octalNumber)); return 0;} long long convertOctalToBinary(int octalNumber){ int decimalNumber = 0, i = 0; long long binaryNumber = 0; while(octalNumber != 0) { decimalNumber += (octalNumber%10) * pow(8,i); ++i; octalNumber/=10; } i = 1; while (decimalNumber != 0) { binaryNumber += (decimalNumber % 2) * i; decimalNumber /= 2; i *= 10; } return binaryNumber;} 尝试一下 输出结果为： 输入一个八进制数: 51八进制数 51 转二进制为 101001