CODEWITHSUNDEEP
cconstants
user1730056
user1730056

Reputation: 623

receiving error when using if statements with a constant variable - C

I have #define MAX_PERSONS = 20; after my headers. I'm trying to do an if statement, where I compare an int p to MAX_PERSONS

int checkString(char string[]){
   int p = strlen(string);
   printf("\n\t\t%s is %d characters long\n", string, p);
   if (p < MAX_PERSONS){
       return 1;
   }
   if (p > 20){
       return 0;
   }
}

I receive this error menu.c:80:10: error: expected expression before ‘=’ token. However, if I switch MAX_PERSONS to 20 like how I did with the second if statement, it works.

I was wondering if someone could let me know why this is happening and how I can use the constant value. Thanks!

Upvotes: 0

Views: 77

Answers (1)

Vagish
Vagish

Reputation: 2547

Replace

#define MAX_PERSONS = 20;

with

#define MAX_PERSONS 20

#define is a pr-processor directive which replaces MAX_PERSONS with the followed text before compilation.

Upvotes: 4

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