I am working on a project that parses a text file thats suppose to be a simple coded program. The problem is that when I try to complile the program I get this error:
In file included from driver.c:10:
parser.c: In function ‘Statement’:
parser.c:24: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
parser.c:153: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
parser.c:159: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
parser.c:167: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
parser.c:176: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
parser.c:185: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
parser.c:194: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
parser.c:201: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
parser.c:209: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
driver.c:19: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
driver.c:50: error: old-style parameter declarations in prototyped function definition
driver.c:50: error: expected ‘{’ at end of input
Im not familiar with this error and not sure how to fix it.
Here is my parser.c file which the error is happening in:
#include <stdio.h>
#include <stdlib.h>
#include "parser.h"
AST_NODE* Program(AST_NODE* node);
AST_NODE* Statement(AST_NODE* node)
AST_NODE* AssignStmt(AST_NODE* node);
AST_NODE* Print(AST_NODE *node);
AST_NODE* Repeat(AST_NODE* node);
AST_NODE* Exp(AST_NODE* node);
AST_NODE* Factor(AST_NODE* node);
AST_NODE* Term(AST_NODE* node);
AST_NODE* parser(TOKEN* token,AST_NODE* node, FILE* input_file)
{
AST_NODE temp = malloc(sizeof(AST_NODE*));
if(token->type == Id)
{
temp-> tok = token;
node -> child1 = temp;
return node
}else
if(token->type == keyword)
{
if(strcmp(node->attribute, "print") == 0)
{
temp -> type = print;
node -> child1 = temp;
return node;
}
else if(strcmp(node->attribute, "repeat") == 0)
{
temp -> type = repeat;
node -> child1 = temp;
return node;
}
return node->prev;
}else
if(token->type == num)
{
temp->type = factor;
temp->tok = token;
AST_NODE temp2 = Exp(Term(temp));
node-> child3 = temp2
return node;//back to ID->term->exp then to either print repeat or assignment
}else
if(token->type == addOp)
{
temp-> tok = token;
node-> child2 = temp;
return node;
}else
if(token->type == multOp)
{
temp-> tok = token;
node-> child2 = temp;
return node;
}else
if(token->type == assignment)
{
temp->type = assignStmt;
temp->tok = token;
node->child2 = temp;
return node;
}else
if(token->type == semicolon)
{
temp-> type = assignStmt;
temp-> tok = token;
if(node->type == keyword)
{
node->child3 = temp;
}else
{
node->child4 = temp;
}
return node;
}else
if(token->type == lparen)
{
temp -> tok = token;
if(node->type == repeat)
node->child2 = temp;
else
node->child1 = temp;
return node = node->prev;
}else
if(token->type == rparen)
{
temp -> tok = token;
if(node->type == repeat)
node->child4 = temp;
else
node->child3 = temp;
return node;
}else if(token->type == newLine)
{
while(node->type != program)
{
node = node->prev;
}
return node;
}else{
if(token->type == Id)
{
AST_NODE temp2 = AssignStmt(Program(node));
temp->type = Id;
temp->tok = token
temp->prev = temp2;
temp2-> child1 = temp;
return temp2;
}else if(strcmp(token->attribute,"print"))
{
AST_NODE temp2 = Print(Program(node));
temp->type = print;
temp->tok = token
temp->prev = temp2;
temp2-> child1 = temp;
return temp2;
}else if(strcmp(token->attribute,"repeat"))
{
AST_NODE temp2 = Repeat(Program(node));
temp->type = repeat;
temp->tok = token
temp->prev = temp2;
temp2-> child1 = temp;
return temp2;
}
printf("error");
return NULL;
}
}
AST_NODE* Program(AST_NODE* node)
{
node->type = program;
Statement(node);
return node;
}
AST_NODE* Statement(AST_NODE* node)
{
AST_NODE temp = malloc(sizeof(AST_NODE*));
temp-> type = statement;
temp-> prev = node;
node->child1-> temp;
return temp;
}
AST_NODE* AssignStmt(AST_NODE* node)
{
AST_NODE temp = malloc(sizeof(AST_NODE*));
temp->type = assignStmt;
temp-> prev = node;
node->child1-> temp;
return temp;
}
AST_NODE* Print(AST_NODE* node)
{
AST_NODE temp = malloc(sizeof(AST_NODE*));
temp->type = print;
temp-> prev = node;
node->child1-> temp;
return node;
}
AST_NODE* Repeat(AST_NODE* node)
{
AST_NODE temp = malloc(sizeof(AST_NODE*));
temp->type = repeat;
temp-> prev = node;
node->child1-> temp;
return node;
}
AST_NODE* Exp(AST_NODE* node)
{
AST_NODE temp = malloc(sizeof(AST_NODE*));
temp->type = exp;
temp->child1-> node;
return temp;
}
AST_NODE* factor(AST_NODE* node)
{
AST_NODE Temp = malloc(sizeof(AST_NODE*));
temp->type = factor;
node->child1-> temp;
return temp;
}
AST_NODE* Term(AST_NODE* node)
{
AST_NODE temp = malloc(sizeof(AST_NODE*));
temp->type = term;
temp->child1-> node;
return temp;
}
Here is my driver.c file where I am also getting the error «old-style parameter declarations in prototyped function definition expected ‘{‘ at end of input». This also I am very unfamiliar with.
#include <stdio.h>
#include "parser.c"
#include "parser.h"
AST_NODE* parser(TOKEN* token,AST_NODE node, FILE *input_file);
int main(void)
{
TREE *current = 0;
FILE *input_file = fopen("test.txt", "r");
TOKEN *token = (TOKEN*) malloc(sizeof(TOKEN));
TOKEN *tok = (TOKEN*) malloc(sizeof(TOKEN));
AST_NODE* node = malloc(sizeof(AST_NODE));
while(!feof(input_file))
{
token = scan(input_file);
if(token->type != null)
{
parser(token,node,input_file);
printf("%s", token->attribute);
if(token->checkR == ';')
{
tok->type = semicolon;
tok->attribute = ";";
parser(tok,node,input_file);
}if(token->checkR == ')')
{
tok->type = rparen;
tok->attribute = ")";
parser(tok,node,input_file);
}
}
}
fclose(input_file);
return 0;
}
Here is my parser.h file where I declare my TOKEN and my AST_NODE to create my tree and form my tokens to fill the tree.
#ifndef _parser_h
#define _parser_h
typedef enum token_type
{
null,
Id,
keyword,
num,
addOp,
multOp,
assignment,
semicolon,
lparen,
rparen,
newLine
}TOKEN_TYPE;
typedef struct token{
int type;
char *attribute;
char checkR;
}TOKEN;
typedef enum node_type
{
program,
statement,
assignStmt,
print,
repeat,
exp,
factor,
term
}NODE_TYPE;
typedef struct ast_node{
NODE_TYPE type;
TOKEN *tok;
struct AST_NODE *prev;
struct AST_NODE *child1;
struct AST_NODE *child2;
struct AST_NODE *child3;
struct AST_NODE *child4;
struct AST_NODE *child5;
}AST_NODE;
#endif
There is one more file called scanner.c but I know its working perfectly because I have tested it in all the possible inputs and got no problems.
If anyone could help I would appreciate it very much.
Could not able to solve this..
I am implementing a queue. After writing the complete code I had the error listed below:
expected '=', ',', ';', 'asm' or '__attribute__' before '.' token
Then I wrote a simple program, but same problem persists. Couldn’t able to understand how to solve this. I have looked into solutions in stackoverflow.com and google.com a lot but still couldn’t able to solve this.Please help.
I would like to initialize globally Q.front = Q.rear = Any value
#include <stdio.h>
#include <stdlib.h>
struct Queue
{
int front, rear;
int queue[10] ;
};
struct Queue Q;
Q.front = 0;
Q.rear = 0;
int main()
{
return 0;
}
I159
29.5k31 gold badges97 silver badges132 bronze badges
asked Apr 25, 2012 at 7:09
0
Q.front = 0; is not a simple initializer, it is executable code; it cannot occur outside of a function. Use a proper initializer for Q.
struct Queue Q = {0, 0};
or with named initializer syntax (not available in all compilers, and as yet only in C):
struct Queue Q = {.front = 0, .rear = 0};
answered Apr 25, 2012 at 7:14
geekosaurgeekosaur
58.8k11 gold badges123 silver badges114 bronze badges
0
You can’t initialize variable using Q.front = 0; Q.rear = 0; in global scope. Those statements should be inside main in your case.
answered Apr 25, 2012 at 7:14
As @Naveen said you can’t assign to a member of a struct that is in global scope. Depending on the version of C though you could do this:
struct Queue q = {0,0};
or
struct Queue q = {.front = 0, .rear = 0 };
answered Apr 25, 2012 at 7:17
WillWill
4,5651 gold badge26 silver badges48 bronze badges
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Here, we will learn why an Error: expected ‘=’, ‘,’, ‘,’ ‘asm’ or ‘ _attribute_’ before ‘<‘ token is occurred and how to fix it in C programming language?
Submitted by IncludeHelp, on September 11, 2018
A very common error in C programming language, it occurs when # is not used before the include.
As we know that #include is a preprocessor directive and it is used to include a header file’s code to the program. But, include is nothing without #, it is not valid and it cannot be used to include a header file in the program.
Example:
include <stdio.h> int main(void) { printf("Hello world!"); return 0; }
Output
prog.c:1:9: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘<’ token
include <stdio.h>
^
How to fix?
To fix this error — use #include.
Correct code:
#include <stdio.h> int main(void) { printf("Hello world!"); return 0; }
Output
Hello world!
C Common Errors Programs »
0
0
Пытаюсь перевести небольшую программу с с++ на читый с. С g++ все компилируется и работает, с gcc выдает ошибку:
error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token
Код выглядит примерно так:
struct my_structure;
my_structure* get_my_structure(char* param);
Ошибка ругается на 2ю строку. Гугл ничего внятного не говорит. Не пойму, что здесь не так.
gcc (GCC) 4.2.1 (SUSE Linux)
- Ссылка
Problems encountered when writing code in C language:
error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘attribute’ before ‘{’ token|
After checking for a long time, nothing was found. There are many reasons for this error. I hope I won’t have to supplement myself in the future.
Reason for error:
Syntax error, some necessary symbols are missing.
Error code:
Here is the function declaration forgetting the semicolon.
#include <stdio.h>
#include <stdlib.h>
#include<math.h>
void money(int year,int loan,float rate)
int main()
{
int n,loan;
float rate;
printf("Input loan:");
scanf("%d",&loan);
printf("Input rate:");
scanf("%f",&rate);
for(n=5;n<=30;n++)
money(n,loan,rate);
return 0;
}
void money(int year,int loan,float rate)
{
int loan,month;
month = year*12;
money = loan*rate(1+pow(1+rate,month))/(pow(1+rate,month)-1);
printf("Year:%d Money:%fn",year,money)
}