Main.cc: In function 'int main()': Main.cc:6:3: error: invalid conversion from 'int (*)()' to 'char' [-fpermissive] a=getchar; ^ Main.cc:7:11: warning: statement has no effect [-Wunused-value] (int) (a); ^ Main.cc:8:16: error: 'c' was not declared in this scope if(a-1>=32 || c-1<=126){ ^