Some operating system work

1 files changed, 36 insertions, 0 deletions

diff --git a/sem1/osc/mm10/opg3.l b/sem1/osc/mm10/opg3.l
new file mode 100644
index 0000000..1c4b9c7
--- /dev/null
+++ b/sem1/osc/mm10/opg3.l
@@ -0,0 +1,36 @@
+%{
+
+#include <stdio.h>
+
+#define BEGIN_T 1
+#define END_T 2
+#define NUM_T 3
+#define VAR_T 4
+
+%}
+
+VAR			[a-zA-Z][a-zA-Z\_\-0-9]*
+TAL			[0-9]+
+
+%%
+
+begin		{printf("Found a BEGIN\n"); return BEGIN_T;}
+end			{printf("Found a END\n"); return END_T;}
+{VAR}		{printf("Found a variable %s\n", yytext); return VAR_T;}
+{TAL}		{printf("Found a number %d\n", strtol(yytext, NULL, 10)); return NUM_T;}
+
+%%
+
+int main(void) {
+
+	for(;;) {
+		int t = yylex();
+		printf("yylex: %d\n", t);
+		if( t == END_T ) {
+			break;
+		}
+	}
+
+	return 0;
+	
+}