Main.cc: In function 'int main()':
Main.cc:6:5: error: 'doble' was not declared in this scope
doble a=5,b=8,c=12,d=39;
^
Main.cc:7:21: error: 'a' was not declared in this scope
printf("%.3lf",(a+b+c)/3);
^
Main.cc:7:23: error: 'b' was not declared in this scope
printf("%.3lf",(a+b+c)/3);
^
Main.cc:7:25: error: 'c' was not declared in this scope
printf("%.3lf",(a+b+c)/3);
^