got some chars to identify and edited the simple literal test to include more examples -Task01

lexicalStructure.lex

@@ -13,7 +13,7 @@ DIGIT [0-9]
 
 "null" {printf( "C_NULL: %s (%d)\n", yytext, atoi( yytext ) );}
 
-"'"[.|\n]"'" {printf( "C_CHARACTER: %s (%d)\n", yytext, atoi( yytext ) );} /*using double \ per documentation to show escaped chars*/
+\'.\'|\'\\[nt]\' {printf( "C_CHARACTER: %s (%d)\n", yytext, atoi( yytext ) );} /*using double \ per documentation to show escaped chars*/
 
 "true" {printf( "C_TRUE: %s (%d)\n", yytext, atoi( yytext ) );}
 

simpleLiteralTest.a

@@ -8,4 +8,9 @@ null
 '7'
 true
 '189
+'/n'
+'/t'
+'"'
+'/'
+