CODEWITHSUNDEEP
cparametersc-preprocessor
Amit123
Amit123

Reputation: 13

define in c get the value of parameter

I want to create a program that will print the value of the three parameter by using define in c

#include <stdio.h>
#define Print(num) printf("%d",n##num)
int main()
{
    int i;
    int n1=1, n2=2, n3=3;
    for(i=1;i<=3;i++)Print(i);
}

the problem than n##num equal to ni and to n1,n2,n3. is there a way to get the values of i to set in num instead of "i"?

Upvotes: 1

Views: 263

Answers (1)

dbush
dbush

Reputation: 225007

The preprocessor runs before the code is even compiled. You can't do loops in the preprocessor like that.

What you really want is an array:

#include <stdio.h>

int main()
{
    int i;
    int n[] = { 1, 2, 3 };
    for(i=0;i<3;i++) printf("%d\n", n[i]);
}

Upvotes: 4

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