Premier exercice

2020-05-16 01:51:08 +02:00
commit 2f18fb4e70
10 changed files with 409 additions and 0 deletions
--- a/lexical/string.l
+++ b/lexical/string.l
@ -0,0 +1,26 @@
+%option noyywrap
+
+DIG	[0-9]
+
+%%
+
+{DIG}+	{ printf("int(%d)  ",atoi(yytext)); }
+[+*()]	{ printf("'%c'  ",*yytext); }
+[ \n]   { /* ignore */ }
+
+%%
+
+int main (int argc, char **argv)
+{
+	YY_BUFFER_STATE buffer;
+
+	buffer = yy_scan_string("100+5*2");
+	yylex();
+	yy_delete_buffer(buffer);
+
+	buffer = yy_scan_string("20+30");
+	yylex();
+	yy_delete_buffer(buffer);
+
+	puts("");
+}