- %{
- #include <stdio.h>
- #include <stdlib.h>
- %}
- %token NUMBER COMMA
- %left '+'
- %%
- input:
- | input expr '\n' { printf("Sum: %d\n", $2); }
- ;
- expr: NUMBER { $$ = $1; }
- | expr COMMA NUMBER { $$ = $1 + $3; }
- | expr '+' expr { $$ = $1 + $3; }
- ;
- %%
- int main() {
- yyparse();
- return 0;
- }
- int yyerror(char *s) {
- printf("Error: %s\n", s);
- return 0;
- }
[text] 3rd
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