SRCSHOW

#include <stdio.h>
#include <unistd.h>
#include <stdarg.h>

#define SRCSHOW(format, ...) \
    printf("%s/%s [%d]: ", getcwd((char[100]){}, 100), __FILE__, __LINE__); \
    printf(format, __VA_ARGS__); \
    printf("\n"); \


int main(void) {
  SRCSHOW("x=%g, y=%g", 0.5, -7.9);
  return 0;
}