0_0_39176045_25181.cpp: In function 'int main()': 0_0_39176045_25181.cpp:18:13: error: 'year' was not declared in this scope 18 | if((year % 400 == 0) || ((year % 100 != 0) && (year % 4 == 0))) printf("%d\n",date+1); | ^~~~