41 lines
977 B
C
41 lines
977 B
C
/*
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Main program of calculator example.
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Simply invoke the parser generated by bison, and then display the output.
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*/
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#include "expr.h"
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#include "token.h"
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#include <stdio.h>
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/* Clunky: Declare the parse function generated from parser.bison */
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// extern int yyparse(struct stmt *parser_result);
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extern int yyparse();
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extern char *yytext;
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extern int yylex();
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/* Clunky: Declare the result of the parser from parser.bison */
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extern struct stmt *parser_result;
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int main(int argc, char *argv[]) {
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printf("Lab 6 Example Interpreter Compiler\n");
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printf(
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"Enter an infix expression using the operators +-*/() ending with ;\n\n");
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if (yyparse() == 0) {
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printf("Parse successful: \n");
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if (parser_result != NULL) {
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stmt_print(parser_result);
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printf("\n");
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printf("Running the program, results in: \n");
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stmt_evaluate(parser_result);
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printf("\n");
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}
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return 0;
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} else {
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printf("Parse failed!\n");
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return 1;
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}
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}
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