Question

How to create, initialize, and print key-value pair in C

Answer 1

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

typedef struct {
    int key;
    int value;
} KeyValuePair;

KeyValuePair* create_keyvaluepair(int size) {
    KeyValuePair* keyvalue = (KeyValuePair*)malloc(size * sizeof(KeyValuePair));
    srand((unsigned int)time(NULL));
      
    for (int i = 0; i < size; i++) {
        keyvalue[i].key = i;
        keyvalue[i].value = (rand() % 100) + 1;
    }
    
    return keyvalue;
}

void print_keyvaluepair(KeyValuePair* keyvalue, int size) {
    for (int i = 0; i < size; i++) {
        printf("%d %d\n", keyvalue[i].key, keyvalue[i].value);
    }
}

int main() {
    KeyValuePair* keyvalue = create_keyvaluepair(10);
    
    print_keyvaluepair(keyvalue, 10);
    
    free(keyvalue);
    
    return 0;
}



/*
run:

0 83
1 53
2 79
3 14
4 57
5 1
6 59
7 8
8 38
9 87

*/

 

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