C program for https://stackoverflow.com/questions/41864011/associative-arrays-python-vs-perl-vs-awk-performace/41865056#41865056

gistfile1.c

#include <math.h>
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>

static inline bool flip() {
    return rand() % 2 ? true : false;
}

int main() {
    for(int i = 1; i <= 400000000; i++) {
        const char *key1 = flip() ? "NM" : "XR";
        const char *key2 = flip() ? "NM" : "XR";
    
        const int num1 = rand() % 10000000;
        const int num2 = rand() % 10000000;
        int num3 = rand();
        if( flip() ) {
            num3 *= -1;
        }
    
        printf(
            "%s_%d,%s_%d,%d\n",
            key1, num1,
            key2, num2,
            num3
        );
    }
}