#include void foo(int a, int b, double c, double d, int e) { printf("%i\n",a); printf("%i\n",b); printf("%f\n",c); printf("%f\n",d); printf("%i\n",e); } int main() { double x = 1.4; float y = 2.7; short z = 10; unsigned long long a = 20ULL; printf("%i %i %i\n",(int)sizeof(int),(int)sizeof(double),5); printf("%f %f %i\n",x,y,7); foo(sizeof(int), z, x, y, 2); printf("done.\n"); }