2 files changed, 29 insertions, 0 deletions

diff --git a/05/input b/05/input
new file mode 100644
index 0000000..8be510e
--- /dev/null
+++ b/05/input
@@ -0,0 +1,5 @@
+int main() {
+    int one, two, three;
+    three = two + one;
+    printf(three);
+}
diff --git a/05/main.l b/05/main.l
new file mode 100644
index 0000000..ee13053
--- /dev/null
+++ b/05/main.l
@@ -0,0 +1,24 @@
+%{
+    int k = 0;
+    int o = 0;
+    int i = 0;
+%}
+
+%%
+int|main|printf|scanf|char|if|else|for|switch|case k++;
+[+*/%&=] o++;
+[a-zA-Z_][a-zA-Z0-9_]* i++;
+. ;
+\n ;
+%%
+
+int main(void) {
+    yylex();
+    printf("%d keywords\n", k);
+    printf("%d operators\n", o);
+    printf("%d identifiers\n", i);
+}
+
+int yywrap() {
+    return 1;
+}