c语言里面怎么让abcd不变

#include <stdio.h>
int main()
{
int a=1,b=2,c=3,d=4;
printf("%d\n",a + b++);
a=1,b=2,c=3,d=4;
printf("%d\n",a++ > b++ + c || 4.3 * a == b *2 + c);
a=1,b=2,c=3;
printf("%d\n%d\n",a = b++,b = c++);

}输出结果是3.0.3.4
如果我想让abcd不变最后两个值变成2.3怎么办