Question

How to use typedef to define int array (int[]) in C

Answer 1

#include <stdio.h>

int main(void)
{
    typedef int ARR[]; 
    
    ARR a = {1, 2, 3}, b = {6, 7, 8, 9, 10}; 
    
    printf("%u\n", sizeof a);
    printf("%u\n", sizeof b);
    printf("%u\n", sizeof(int));
    
    for (int i = 0; i < sizeof a / sizeof(int); i++)
        printf("%3d", a[i]);
     
    printf("\n");
   
    for (int i = 0; i < sizeof b / sizeof(int); i++)
        printf("%3d", b[i]);
        
    return 0;
}

/*
run:
 
12
20
4
  1  2  3
  6  7  8  9 10

*/

 

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