Created
December 7, 2012 06:59
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二进制十进制转换
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#include<stdio.h> | |
#include<math.h> | |
int main() | |
{ | |
int i=0,n,k,s=0,j=0,a[1000]; | |
char m; | |
while(scanf("%c%d",&m,&n)!=EOF) | |
{ | |
getchar(); | |
if(m=='B') | |
{ i=0; | |
while(n | |
>0) | |
{ | |
a[i]=n%10; | |
n=n/10; | |
s=s+a[i]*pow(2,i); | |
i++; | |
} | |
printf("%d\n",s); | |
} | |
if(m=='D') | |
{ j=0; | |
while(n>0) | |
{ | |
a[j]=n%2; | |
n=n/2; | |
j++; | |
} | |
if(j<8) | |
{ | |
for(i=0;i<8-j;i++) | |
printf("0"); | |
for(i=j-1;i>=0;i--) | |
printf("%d",a[i]); | |
} | |
else | |
for(k=0;k<j;k++) | |
printf("%d",a[k]); | |
printf("\n"); | |
} | |
}return 0; | |
} |
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