在此示例中，您將學習通過創(chuàng)建用戶定義的函數(shù)將八進制數(shù)與十進制數(shù)相互轉(zhuǎn)換。
要理解此示例，您應(yīng)該了解以下C語言編程主題：
#include <stdio.h>
#include <math.h>
int convertDecimalToOctal(int decimalNumber);
int main()
{
int decimalNumber;
printf("輸入十進制數(shù)字: ");
scanf("%d", &decimalNumber);
printf("%d(十進制)= %d(八進制)", decimalNumber, convertDecimalToOctal(decimalNumber));
return 0;
}
int convertDecimalToOctal(int decimalNumber)
{
int octalNumber = 0, i = 1;
while (decimalNumber != 0)
{
octalNumber += (decimalNumber % 8) * i;
decimalNumber /= 8;
i *= 10;
}
return octalNumber;
}輸出結(jié)果
輸入十進制數(shù)字: 116 116(十進制)= 164(八進制)
#include <stdio.h>
#include <math.h>
long long convertOctalToDecimal(int octalNumber);
int main()
{
int octalNumber;
printf("輸入八進制數(shù)字: ");
scanf("%d", &octalNumber);
printf("%d(八進制) =%lld(十進制)", 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;
}輸出結(jié)果
輸入八進制數(shù)字: 164 164(八進制) =116(十進制)