/in/foo.c: In function 'main':
/in/foo.c:30:2: warning: implicit declaration of function 'print' [-Wimplicit-function-declaration]
  print("%.2f %.2f %.2f",max,min,ag);
  ^~~~~
/in/foo.c:29:2: warning: 'max' is used uninitialized in this function [-Wuninitialized]
  wang(a,10,max,min,ag);
  ^~~~~~~~~~~~~~~~~~~~~
/in/foo.c:29:2: warning: 'min' is used uninitialized in this function [-Wuninitialized]
/in/foo.c:29:2: warning: 'ag' is used uninitialized in this function [-Wuninitialized]
/tmp/ccVmJFWO.o: In function `main':
foo.c:(.text.startup+0x6e): undefined reference to `print'
collect2: error: ld returned 1 exit status