27 lines
455 B
C
27 lines
455 B
C
#include <stdio.h>
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#include <unistd.h>
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#define MAXSIZE 4096
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int main(int argc, char **argv) {
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unsigned char in[MAXSIZE],a,b,c,d;
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int len,i;
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len=read(0,in,MAXSIZE);
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// 000000 001111 111122 222222
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// 012345 670123 456701 234567
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i=0;
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while(1) {
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a=(in[i]>>2)+' ';
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b=((in[i]&0x3)<<4)+(in[i+1]>>4)+' ';
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c=(in[i+1]&0xf<<2)+(in[i+2]>>6)+' ';
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d=(in[i+2]&0x3f)+' ';
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printf("%c%c%c%c",a,b,c,d);
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i=i+3;
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if (i>len) break;
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}
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printf("\n");
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}
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