C 程序将十进制转换为八进制数

如何编写一个 C 程序，通过实际示例将十进制转换为八进制数？在本次编程中将十进制转换为八进制数之前，我们都知道：

• 十进制数是基数为 10 的数制系统，它使用 0 到 9 之间的数字。
• 八进制数是基数为 8 的数，它们使用 0 到 7 之间的数字。

将十进制数转换为八进制数——首先，将原始值除以 8。然后，将商除以 8。重复相同的过程，直到给定的数字为零。

C 程序将十进制转换为八进制数的示例

这是将十进制数转换为八进制数的最直接、最好的方法。

#include <stdio.h>
int main() 
{
    int number;
    printf("\n Please Enter the Number You want to Convert  :  ");
    scanf("%d", &number);
    
    printf("\n Octal Number of a Given Number =  %o", number);

    return 0;
}

十进制到八进制的输出

 Please Enter the Number You want to Convert  :  50

 Octal Number of a Given Number =  62

将十进制数转换为八进制数示例 2

此将十进制转换为八进制的程序使用 For 循环将用户给定的十进制值转换为八进制值。最后，我们使用另一个 For 循环来打印数组元素。我建议您参考打印数组文章。

#include <stdio.h>
int main() 
{
    int octalNumber[10], number, i, j;
    printf("\n Please Enter the Number You want to Convert  :  ");
    scanf("%d", &number);
    
    for(i = 0; number > 0; i++)
    {
        octalNumber[i] = number % 8;
        number = number / 8;
    }
    
    printf("\n Equivalent Octal Number of a Given Number =  ");
    for(j = i - 1; j >= 0; j--)  
    {
        printf("%d", octalNumber[j]);
    }
    return 0;
}

 Please Enter the Number You want to Convert  :  25

 Equivalent Octal Number of a Given Number =  31

将十进制数转换为八进制数示例 3

此程序与上述程序相同。这里，将 For 循环替换为While 循环。

#include <stdio.h>
 
int main() 
{
    int octalNumber[10], number, i, j;
    printf("\n Please Enter the Number You want to Convert  :  ");
    scanf("%d", &number);
    
    while(number != 0)
    {
        octalNumber[i++] = number % 8;
        number = number / 8;
    }
    
    printf("\n Equivalent Octal Number of a Given Number =  ");
    for(j = i - 1; j > 0; j--)  
    {
        printf("%d", octalNumber[j]);
    }
    return 0;
}

使用函数将十进制数转换为八进制数

在此程序中，我们使用函数来分离逻辑。

#include <stdio.h>

long Decimal_to_Octal(int number)
{
    long octalNumber = 0, i = 1;
    int remainder;
    while(number != 0)
    {
        remainder = number % 8;
        number = number / 8;
        octalNumber = octalNumber + (remainder * i);
        i = i * 10;
    }
    return octalNumber;
}

int main() 
{
    int number;
    printf("\n Please Enter the Number You want to Convert  :  ");
    scanf("%d", &number);
    
    long oct  = Decimal_to_Octal(number);
    printf("\n Equivalent Octal Number of %d =  %ld", number, oct);
    
    return 0;
}

 Please Enter the Number You want to Convert  :  22

 Equivalent Octal Number of 22 =  26

将十进制数转换为八进制数示例 5

这是另一个 C 编程示例，用于将十进制值转换为八进制数。

#include <stdio.h>
#include<math.h>

long Decimal_to_Octal(int number)
{
    long octalNumber = 0;
    int remainder, count = 0;
    while(number != 0)
    {
        remainder = number % 8;
        number = number / 8;
        octalNumber = octalNumber + remainder * pow(10, count);
        count++;
    }
    return octalNumber;
}

int main() 
{
    int number;
    printf("\n Please Enter the Number You want to Convert  :  ");
    scanf("%d", &number);
    
    long oct  = Decimal_to_Octal(number);
    printf("\n Equivalent Octal Number of %d =  %ld", number, oct);
    
    return 0;
}

 Please Enter the Number You want to Convert  :  70

 Equivalent Octal Number of 70 =  106