#include <stdio.h>
#include <string.h>
 
#define node(name, key_t, value_t)    \
    typedef struct  {       \
        key_t key;              \
        value_t value;          \
    } name;                 \
 
int main(int argc, const char * argv[]) {
    node(stringIntNode, char*, int);
    stringIntNode* n = malloc(sizeof(stringIntNode*));
    n->key = "first";
    n->value = 1;
 
    printf("the node n has a key of %s and a value of %d.\n", n->key, n->value);
 
    // error starts from here
    node(charStringNode, char, char*);
    charStringNode* n2 = malloc(sizeof(charStringNode*));
    n2->key = 'a';
    n2->value = "first";
 
    printf("the node n2 has a key of %c and value of %s.\n", n2->key, n2->value);
 
    return 0;
}

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