Main.cc: In function 'int main()':
Main.cc:6:7: error: expected primary-expression before 'char'
a=char((a+1-97)%26+97;
^
Main.cc:7:7: error: expected primary-expression before 'char'
b=char((b+1-97)%26+97;
^
Main.cc:8:7: error: expected primary-expression before 'char'
c=char((c+1-97)%26+97;
^
Main.cc:9:7: error: expected primary-expression before 'char'
d=char((d+1-97)%26+97;
^