<ais523> ` printf \'#include <stdio.h>\\nint main(void) { float C = 4.0; printf("%%f", C/C++); }\' | gcc -fno-diagnostics-color -Wall -Wextra -x c /dev/stdin

Umlaut is German for "hum aloud", an important feature of the German language. It is indicated by putting two dots over the vowel of the syllable.