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📜  C程序将二进制数转换为八进制，反之亦然

📅  最后修改于: 2020-10-04 11:37:13             🧑  作者: Mango

在此示例中，您将学习如何通过创建用户定义的函数将二进制数手动转换为八进制，反之亦然。

将二进制转换为八进制的程序

在此程序中，我们将首先将二进制数字转换为十进制。然后，十进制数字转换为八进制。 

#include 
#include 
int convert(long long bin);
int main() {
    long long bin;
    printf("Enter a binary number: ");
    scanf("%lld", &bin);
    printf("%lld in binary = %d in octal", bin, convert(bin));
    return 0;
}

int convert(long long bin) {
    int oct = 0, dec = 0, i = 0;

    // converting binary to decimal
    while (bin != 0) {
        dec += (bin % 10) * pow(2, i);
        ++i;
        bin /= 10;
    }
    i = 1;

    // converting to decimal to octal
    while (dec != 0) {
        oct += (dec % 8) * i;
        dec /= 8;
        i *= 10;
    }
    return oct;
}

输出 

Enter a binary number: 101001
101001 in binary = 51 in octal
将八进制转换为二进制的程序

在此程序中，八进制数首先会转换为十进制。然后，将十进制数转换为二进制数。 

#include 
#include 
long long convert(int oct);
int main() {
    int oct;
    printf("Enter an octal number: ");
    scanf("%d", &oct);
    printf("%d in octal = %lld in binary", oct, convert(oct));
    return 0;
}

long long convert(int oct) {
    int dec = 0, i = 0;
    long long bin = 0;

    // converting octal to decimal
    while (oct != 0) {
        dec += (oct % 10) * pow(8, i);
        ++i;
        oct /= 10;
    }
    i = 1;

   // converting decimal to binary
    while (dec != 0) {
        bin += (dec % 2) * i;
        dec /= 2;
        i *= 10;
    }
    return bin;
}

输出 

Enter an octal number: 67
67 in octal = 110111 in binary