Driver Code
int main ( ) { string S = " aBc " ; unordered_map < char , char > M ; M [ ' a ' ] = ' $ ' ; M [ ' B ' ] = ' # ' ; M [ ' c ' ] = ' ^ ' ; M [ ' d ' ] = ' & ' ; M [ '1' ] = ' * ' ; M [ '2' ] = ' ! ' ; M [ ' E ' ] = ' @ ' ;