Question

How to use constant in C

Answer 1

#include <stdio.h>

int main(void) {
    const int n = 98;
    
    printf("%i", n);
    
    // n = 20; // error: assignment of read-only variable ‘n’
}



/*
run:
   
98
   
*/

 

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Answer 2

#include <stdio.h>

int main(void) {
    const float f = 3.14;
    
    printf("%.2f", f);
    
    //f = 23.892; // error: assignment of read-only variable ‘f’
}



/*
run:
   
3.14
   
*/

 

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