说明
编译原理大作业。将一种类C语言翻译成没有循环控制语句(如for,while)的C语言。
支持类型推导，错误检测。
输出三地址码和翻译后的C语言。
使用了工具flex + bison。在Windows10 64bit + VS2017下可以配置成功。具体如何配置自行百度。
测试样例
// 源代码
int main()
{
int x = 0;
int y = 0;
int z = 0;
int n;
read(n);
for (; n<1000; n++)
{
x = n / 100;
y = (n % 100)/10 ;
z = n % 10;
if(n == x*x*x + y*y*y +z*z*z)
{
write(n);
}
}
int a = 0;
for ( x=1; x<10; x++)
{
for ( y =0; y<10; y++)
{
for ( z = 0; z<10; z++)
{
a = 100*x+10*y+z;
if (a== x*x*x + y*y*y + z*z*z)
{
write(a);
}
}
}
}
return 0;
}// 翻译后代码
int main()
{
int x=0;
int y=0;
int z=0;
int n;
cin >> n;
{
label_0:
int tempVar0=n<1000;
if (tempVar0 == false) goto label_23;
{
int tempVar1=n/100;
x=tempVar1;
int tempVar2=n%100;
int tempVar3=tempVar2/10;
y=tempVar3;
int tempVar4=n%10;
z=tempVar4;
{
int tempVar5=x*x;
int tempVar6=tempVar5*x;
int tempVar7=y*y;
int tempVar8=tempVar7*y;
int tempVar9=tempVar6+tempVar8;
int tempVar10=z*z;
int tempVar11=tempVar10*z;
int tempVar12=tempVar9+tempVar11;
int tempVar13=n==tempVar12;
if (tempVar13 == false) goto label_19;
{
cout << n << endl;
}
}
label_19:
;
}
int tempVar1=n;
n=n+1;
goto label_0;
}
label_23:
;
int a=0;
{
x=1;
label_25:
int tempVar2=x<10;
if (tempVar2 == false) goto label_60;
{
{
y=0;
label_28:
int tempVar3=y<10;
if (tempVar3 == false) goto label_56;
{
{
z=0;
label_31:
int tempVar4=z<10;
if (tempVar4 == false) goto label_52;
{
int tempVar5=100*x;
int tempVar6=10*y;
int tempVar7=tempVar5+tempVar6;
int tempVar8=tempVar7+z;
a=tempVar8;
{
int tempVar9=x*x;
int tempVar10=tempVar9*x;
int tempVar11=y*y;
int tempVar12=tempVar11*y;
int tempVar13=tempVar10+tempVar12;
int tempVar14=z*z;
int tempVar15=tempVar14*z;
int tempVar16=tempVar13+tempVar15;
int tempVar17=a==tempVar16;
if (tempVar17 == false) goto label_48;
{
cout << a << endl;
}
}
label_48:
;
}
int tempVar5=z;
z=z+1;
goto label_31;
}
label_52:
;
}
int tempVar4=y;
y=y+1;
goto label_28;
}
label_56:
;
}
int tempVar3=x;
x=x+1;
goto label_25;
}
label_60:
;
}// 输出的三地址码
= 100 n label_0
< n 1000 tempVar0 label_1
IF NOT tempVar0 goto label_24 label_2
/ n 100 tempVar1 label_3
= tempVar1 x label_4
% n 100 tempVar2 label_5
/ tempVar2 10 tempVar3 label_6
= tempVar3 y label_7
% n 10 tempVar4 label_8
= tempVar4 z label_9
* x x tempVar5 label_10
* tempVar5 x tempVar6 label_11
* y y tempVar7 label_12
* tempVar7 y tempVar8 label_13
+ tempVar6 tempVar8 tempVar9 label_14
* z z tempVar10 label_15
* tempVar10 z tempVar11 label_16
+ tempVar9 tempVar11 tempVar12 label_17
== n tempVar12 tempVar13 label_18
IF NOT tempVar13 goto label_20 label_19
label_20
= n tempVar1 label_21
+ n 1 n label_22
goto label_1 label_23
label_24
= 1 x label_25
< x 10 tempVar2 label_26
IF NOT tempVar2 goto label_61 label_27
= 0 y label_28
< y 10 tempVar3 label_29
IF NOT tempVar3 goto label_57 label_30
= 0 z label_31
< z 10 tempVar4 label_32
IF NOT tempVar4 goto label_53 label_33
* 100 x tempVar5 label_34
* 10 y tempVar6 label_35
+ tempVar5 tempVar6 tempVar7 label_36
+ tempVar7 z tempVar8 label_37
= tempVar8 a label_38
* x x tempVar9 label_39
* tempVar9 x tempVar10 label_40
* y y tempVar11 label_41
* tempVar11 y tempVar12 label_42
+ tempVar10 tempVar12 tempVar13 label_43
* z z tempVar14 label_44
* tempVar14 z tempVar15 label_45
+ tempVar13 tempVar15 tempVar16 label_46
== a tempVar16 tempVar17 label_47
IF NOT tempVar17 goto label_49 label_48
label_49
= z tempVar5 label_50
+ z 1 z label_51
goto label_32 label_52
label_53
= y tempVar4 label_54
+ y 1 y label_55
goto label_29 label_56
label_57
= x tempVar3 label_58
+ x 1 x label_59
goto label_26 label_60
label_61
End label_62