View Compilation Error

0_0_17016969_17203.cpp: In function 'void scanf_(int&)':
0_0_17016969_17203.cpp:162:9: error: 't' was not declared in this scope
  while((t=getchar())&&(t<'0'||t>'9')){
         ^
0_0_17016969_17203.cpp:166:16: error: 't' was not declared in this scope
   data=data*10+t-'0';
                ^
0_0_17016969_17203.cpp:168:9: error: 't' was not declared in this scope
  }while(t>='0'&&t<='9');
         ^