Tukukkk

I have to scan this file which partly contains

SNOL

INTO num IS 8

INTO res IS 9

and the output of the code below is

Program starts...

Set value of num to 0

Set value of res to 8

input msg

which is wrong because num should be 8 and res should be 9

why is it num scanning 0 instead of 8?

and why doesn't the code work anymore if I assign number to num and number to res?

num = number;



//Tokenizer functions//

bool isLowerCase(const char *object)

{

    int i;

    int len = strlen(object);

    for(i = 0; i < len; i++) {

        if(object[i] >= 'a' && object[i] <= 'z') {

            return true;

        }

    }

    return false;

}

//function to check if character is Float.

bool objectFloat(const char* object) {

    //check if 1st character is a digit, if not then return false, 

    otherwise

        return true.

        if(!isdigit(object[0]))

            return false;



    // Check if the 2nd character to the last are digits or periods.

    // If not, return false otherwisereturn true

    int periods = 0;  //initialize how many periods in the object to zero

    int i;

    //if character is a period then increment periods.

    for(i = 1; i < strlen(object); i++) {

        if(object[i] == '.') {

            periods++;

        }

        //return false if character is not a digit

        else if(!isdigit(object[i])) {

            return false;

        }

    }

    // return true if there is only one period.

    return periods == 1;

}



//function to check if character is a keyobject.

bool isKeyobject(const char* object) {

    char keyobjects[11][11] = { "SNOL", "LONS", "INTO", "IS", "MULT", "BEG",

    "PRINT", "ADD", "SUB", "DIV", "MOD" };



    int i;

    for(i = 0; i < 11; i++) {

        // Check if object is equal to keyobjects at index i

        // If yes, return true

        if(isLowerCase(object))

            return false;

        if(strcmp(object, keyobjects[i]) == 0) {

            return true;

        }

    }

    //object is not equal to any of the keyobjects so return false

    return false;

}



//Function to check if every character is an integer

// If not, return false otherwise return true

bool objectInt(const char* object) {



    int i;

    for(i = 0; i < strlen(object); i++) {

        if(!isdigit(object[i])) return false;

    }



    return true;

}



bool objectIsVariable(const char* object) {



    // Check if alphanumeric character & lower case

    // If not, return false

    int i;



    for(i = 0; i < strlen(object); i++) {



        if(!isalnum(object[i]) && !isLowerCase(object)) return false;

    }

    return true;

}



int main() {



    FILE *s_path = fopen("test.snol", "r");



    int number = 0;

    int num, res;

    if(isKeyobject(object) && strcmp(object, IsitSNOL) == 0) {

        printf("Program starts...n");



    }

    else if(isKeyobject(object) && strcmp(object, IsitINTO) == 0) {

        printf("Set value of ");

    }



    if(objectInt(object)) {

        number = atoi(object);

    }

    else if(objectFloat(object)) {

        number = atof(object);

    }

    if(objectIsVariable(object) && strcmp(object, IsitNum) == 0) {

        //if float



        printf("num to %dn", number);



        num == number;

    }

    else if(objectIsVariable(object) && strcmp(object, IsitRes) == 0) {

        //if float

        printf("res to %dn", number);

        res == number;

    }

    else if(isKeyobject(object) && strcmp(object, IsitBEG) == 0) {

        printf("input msgn");



        scanf("%s", msg);



        fscanf(s_path, " %s", &object);

        printf("INPUT(%s): %sn", object, msg);

    }

}

} // END MAIN -----------------------------------//

The problem seem to be that you read the number after the variable name but you do the print before.

So your sequence is:

Keyobject INTO

objectIsVariable num  // Now you print the value

objectInt             // Now you read the value

You need to postpone the printing until you have actually read the value.

This is not a very elegant solution, but you can try like:

int flag = 0;



if(objectInt(object)) {

    number = atoi(object);

    if (flag == 1)

    {

        num = number;

        printf("num to %dn", number);

    }

    else if (flag == 2)

    {

        res = number;

        printf("res to %dn", number);

    }

    else

    {

        printf("Illegal flagn");

    }

    flag = 0;

}





if(objectIsVariable(object) && strcmp(object, IsitNum) == 0) {

    flag = 1;

}

else if(objectIsVariable(object) && strcmp(object, IsitRes) == 0) {

    flag = 2;

}