50 lines
773 B
C++
50 lines
773 B
C++
#include<stdio.h>
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#include<string.h>
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int main()
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{
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int n,i,j,k,sum,len,q,w = 1,p;
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char c,a[16];
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scanf("%d",&n);
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while(n--)
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{
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getchar();
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scanf("%c ",&c);
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if(c=='b')
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{
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k=1;
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sum=0;
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scanf("%s",a);
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len=strlen(a);
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for(i=len-1;i>=0;i--)
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{
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sum=sum+(a[i]-'0')*k;
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k=-2*k;
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}
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printf("From binary: %s is %d\n", a, sum);
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}
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else if(c=='d')
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{
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scanf("%d",&p);
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i=0;
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q=p;
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if(p==0){printf("From decimal: 0 is 0\n");continue;}
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while(p!=0)
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{
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a[i++]=p%(-2);
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p=p/(-2);
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if(a[i-1]==-1)
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{
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a[i-1]=1;
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if(p<0)p--;
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else p++;
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}
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}
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printf("From decimal: %d is ",q);
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for(j=i-1;j>=0;j--)
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printf("%d",a[j]);
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printf("\n");
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}
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}
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return 0;
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}
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