八进制转换为十进制

include

include

long long convertOctalToDecimal(int octalNumber);
int main()
{
int octalNumber;

printf("输入一个八进制数: ");
scanf("%d", &octalNumber);

printf("八进制数 %d  转换为十进制为 %lld", octalNumber, convertOctalToDecimal(octalNumber));

return 0;

}

long long convertOctalToDecimal(int octalNumber)
{
int decimalNumber = 0, i = 0;

while(octalNumber != 0)
{
    decimalNumber += (octalNumber%10) * pow(8,i);
    ++i;
    octalNumber/=10;
}

i = 1;

return decimalNumber;

}

输出结果为：

输入一个八进制数: 116
八进制数 116 转换为十进制为 78