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 转换为二进制位 %lld",octalNumber,convertOctalToBinary(octalNumber));
return 0;
}
long long convertOctalToBinary(int octalNumber)
{
int decimalNumber=0;
int 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;
}