Main.cc: In function ‘int main()’: Main.cc:7:11: error: ‘a’ was not declared in this scope int s[a]; ^ Main.cc:8:20: warning: comparison of constant ‘100’ with boolean expression is always true [-Wbool-compare] for(int c=0;0>s[i]; ^ Main.cc:12:9: error: ‘retun’ was not declared in this scope retun 0; ^~~~~ Main.cc:12:9: note: suggested alternative: ‘rewind’ retun 0; ^~~~~ rewind