0_0_38012817_21599.cpp: In function 'int main()': 0_0_38012817_21599.cpp:6:5: error: 'double1' was not declared in this scope double1 v; ^ 0_0_38012817_21599.cpp:7:24: error: 'v' was not declared in this scope while(scanf("%lf",&v)!=EOF) ^