#include <stdint.h>
#include <stdlib.h>

int32_t f(int32_t, int32_t);
int32_t g(int32_t);

int main(int argc, char** argv) {
  int32_t n1 = f(3, -5);
  n1 = g(n1);
  return EXIT_SUCCESS;
}

int32_t f(int32_t p1, int32_t p2) {
  int32_t x;
  int32_t a[3];
  ...
  x = g(a[2]);
  return x;
}

int32_t g(int32_t param) {
  return param * 2;
}