0_0_22649047_28592.cpp: In function 'int main()': 0_0_22649047_28592.cpp:18:20: error: 'j' was not declared in this scope if(j<=wujiao) ^ 0_0_22649047_28592.cpp:21:12: error: 'i' was not declared in this scope if(i>shijiao) ^