71 lines
1.2 KiB
C
71 lines
1.2 KiB
C
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#include "stdio.h"
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#include "stdlib.h"
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char *integer_to_bin(long integer){
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int bit_num = sizeof(long)*8;
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char *buffer= (char *)malloc(bit_num+1);
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if (buffer==NULL)
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{
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return "malloc error";
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}
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buffer[bit_num]='\0';
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for (int i = 0; i < bit_num; ++i)
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{
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buffer[i]= integer<<i>>(bit_num-1);
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buffer[i]= buffer[i]==0?'0':'1';
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}
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return buffer;
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}
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char *integer_to_hex(long integer){
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int bit_num=sizeof(long)*8/4;
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char *buffer=(char *)malloc(bit_num+3);
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buffer[0]='0';
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buffer[1]='x';
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buffer[bit_num+2]='\0';
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char *tmp=&buffer[2];
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for (int i = 0; i < bit_num; i++)
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{
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tmp[i]= integer<<(i*4)>>(bit_num*4-4);
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tmp[i]= tmp[i]>=0?tmp[i]:tmp[i]+16;
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tmp[i]= tmp[i]<10?(tmp[i]+48):(tmp[i]-10+'A');
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}
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return buffer;
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}
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/*
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A 65
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0 48
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*/
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int main(){
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printf("b(11) = %s\n", integer_to_bin(11));
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printf("b(1023) = %s\n",integer_to_bin(1023) );
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printf("b(23564) = %s\n",integer_to_bin(23564) );
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printf("h(11) = %s\n", integer_to_hex(11));
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printf("h(1023) = %s\n",integer_to_hex(1023) );
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printf("h(23564) = %s\n",integer_to_hex(23564) );
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printf("b(11) = %x\n", 11);
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printf("b(1023) = %x\n",1023 );
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printf("b(23564) = %x\n",23564 );
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return 0;
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}
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