C/C++の宿題を片付けます　115代目

C/C++の宿題を片付けます　115代目 at TECH

582:デフォルトの名無しさん
08/09/09 23:17:10
>>577
問題1
#include <stdio.h>
#define CONST_NUM ( -2007110825 ) /*( 314159265 )*/
const int number = CONST_NUM;
char str_decimal[16];
char str_hex[16];
char str_octal[16];
char str_binary[40];
const char * bin_table[] = {
"0000", "0001", "0010", "0011",
"0100", "0101", "0110", "0111",
"1000", "1001", "1010", "1011",
"1100", "1101", "1110", "1111",
};
int main()
{
int i = 0;
int l = 0;
sprintf( str_decimal, "%d", number );
sprintf( str_hex, "0x%x", number );
sprintf( str_octal, "0%o", number );
l = sprintf( str_binary, "0b" );
for ( i = 28; i >= 0; i -= 4 ) {
l += sprintf( str_binary + l, "%s", bin_table[( number >> i ) & 0x0f] );
}
printf( "decimal:%s\n", str_decimal );
printf( " hex:%s\n", str_hex );
printf( " octal:%s\n", str_octal );
printf( " binary:%s\n", str_binary );
}

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