Main.cc:13:1: error: stray '\357' in program a4=(a4-97+1)%26+97; ^ Main.cc:13:1: error: stray '\274' in program Main.cc:13:1: error: stray '\233' in program Main.cc: In function 'int main()': Main.cc:9:1: error: expected initializer before 'cin' cin>>a1>>a2>>a3>>a4; ^ Main.cc:13:1: error: 'a4' was not declared in this scope a4=(a4-97+1)%26+97; ^