void get2string(int num,char* buffer)
{
int i = 0;
for (i = 0; i < 32; ++i)
{
buffer[i] = num & (1 << (31 - i));
buffer[i] = buffer[i] >> (31 - i);
buffer[i] = buffer[i] == 0 ? '0' : '1';
}
buffer[32] = '\0';
}
void get16string(long num, char* buffer)
{
int i = 0;
buffer[0] = '0';
buffer[1] = 'x';
buffer[10] = '\0';
char* temp = buffer + 2;
for (i = 0; i < 8; ++i)
{
temp[i] = (char)(num << 4 * i >> 28);
temp[i] = temp[i] >= 0 ? temp[i] : temp[i] + 16;
temp[i] = temp[i] < 10 ? temp[i] + 48 : temp[i] + 55;
}
}
int main()
{
char buffer[33];
int a = 4;
get2string(a, buffer);
cout << buffer << endl;
char buffer2[11];
get16string(a,buffer2);
cout << buffer2 << endl;
system("pause");
return 0;
}
C不使用printf,将十进制数以二进制形式和十六进制的形式输出
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转载自blog.csdn.net/lpl312905509/article/details/104081666
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