ALPHA: breaking changes expected. What that means
NanoC

Hello, world

The smallest NanoC program: an include, a function without braces and an implicit result.

NanoC
+ <stdio.h>
f main()
  printf("Hello from NanoC! %d %g\n", 6 * 7, 1.5)
  0
C
#include <stdio.h>

int main(void) {
    printf("Hello from NanoC! %d %g\n", 6 * 7, 1.5);
    return 0;
}

Output

stdout
Hello from NanoC! 42 1.5

What it shows

functions, includes

Edit in the playgroundSource on GitHub