十进制转二进制:
#include<stdio.h>
int main()
{
int a[20],x;
int rem,i=0;
scanf("%d",&x);
do{
rem=x%2;
x=x/2;
a[i]=rem;
i++;
}while(x!=0);
while(i>0)
printf("%d",a[--i]);
printf("\n");
return 0;
}
十进制转八进制:
#include<stdio.h>
int main()
{
int a[20],x;
int rem,i=0;
scanf("%d",&x);
do{
rem=x%8;
x=x/8;
a[i]=rem;
i++;
}while(x!=0);
while(i>0)
printf("%d",a[--i]);
printf("\n");
return 0;
}
十进制转十六进制
#include<stdio.h>
int main()
{
char a[100];
int x;
int rem,i=0;
scanf("%d",&x);
do{
rem=x%16;
if(rem>9&& rem<16)
{
a[i]=rem+'A'-10;
}
else if(rem>=0&&rem<=9)
{
a[i]=(char)rem+'0';
}
x=x/16;
i++;
}while(x!=0);
while(i>0)
printf("%c",a[--i]);
printf("\n");
return 0;
}