Main.cc: In function 'int main()':
Main.cc:6:10: error: invalid conversion from 'const char*' to 'char' [-fpermissive]
for(i="a";i<=z;i++)
^
Main.cc:6:18: error: 'z' was not declared in this scope
for(i="a";i<=z;i++)
^
Main.cc:9:10: error: invalid conversion from 'const char*' to 'char' [-fpermissive]
for(i="Z";>="A";i--)
^
Main.cc:9:15: error: expected primary-expression before '>=' token
for(i="Z";>="A";i--)
^