03-math.dcf

来自「用Java实现的编译器。把源代码编译成SPARC汇编程序」· DCF 代码 · 共 29 行

class Program
{
    void main () 
    {
        int i1;
    
        i1 = -2147483647 - 1;
        callout("printf","min int operation: result should be -2147483648, is: %d\n",i1);
        i1 = (100-50)*2;
  	callout("printf","paren assoc: result should be 100, is: %d\n",i1);
  	i1 = 100 - 50 - 40;
        callout("printf","- assoc: result should be 10, is: %d\n",i1); 
  	i1 = 100 - 50 + 40;
        callout("printf","-,+ assoc: result should be 90, is: %d\n",i1);
  	i1 = 100 - 5 * 4;
        callout("printf","- * assoc: result should be 80, is: %d\n",i1);
  	i1 = 10 * 5 - 4;
        callout("printf","result should be 46, is: %d\n",i1);
  	i1 = ----3;
        callout("printf","uminus: result should be 3, is: %d\n",i1);
  	i1 = 3;
  	i1 = i1 * i1 - -2;
        callout("printf","*, -, uses var: result should be 11, is: %d\n",i1);
        i1 = 3 * 4 - 2 * 5;
        callout("printf","*,- assoc: result should be 2, is: %d\n",i1);
    }
}