1.txt

编译原理语义分析代码

{
int a;
int b;
read a;
write a;
if (a==10) b=1; else b=2;
while(a>0)
{a=a-1;
 b=b+1;
}
write b;
do{
 b=b+1;
}while(b<10)
b=0;
for(a=0;a<5;a=a+1) b=4;
write b;
}