/in/foo.cc: In function 'int main()':
/in/foo.cc:158:11: warning: 'xmax' is used uninitialized in this function [-Wuninitialized]
  for(;xmin<=xmax;xmin++)
       ~~~~^~~~~~
/in/foo.cc: In function 'int num0(int)':
/in/foo.cc:15:10: warning: 'num0' may be used uninitialized in this function [-Wmaybe-uninitialized]
    num0++;
          ^
/in/foo.cc: In function 'int num1(int)':
/in/foo.cc:30:10: warning: 'num1' may be used uninitialized in this function [-Wmaybe-uninitialized]
    num1++;
          ^
/in/foo.cc: In function 'int num2(int)':
/in/foo.cc:45:10: warning: 'num2' may be used uninitialized in this function [-Wmaybe-uninitialized]
    num2++;
          ^
/in/foo.cc: In function 'int num3(int)':
/in/foo.cc:60:10: warning: 'num3' may be used uninitialized in this function [-Wmaybe-uninitialized]
    num3++;
          ^
/in/foo.cc: In function 'int num4(int)':
/in/foo.cc:75:10: warning: 'num4' may be used uninitialized in this function [-Wmaybe-uninitialized]
    num4++;
          ^
/in/foo.cc: In function 'int num5(int)':
/in/foo.cc:90:10: warning: 'num5' may be used uninitialized in this function [-Wmaybe-uninitialized]
    num5++;
          ^
/in/foo.cc: In function 'int num6(int)':
/in/foo.cc:105:10: warning: 'num6' may be used uninitialized in this function [-Wmaybe-uninitialized]
    num6++;
          ^
/in/foo.cc: In function 'int num7(int)':
/in/foo.cc:120:10: warning: 'num7' may be used uninitialized in this function [-Wmaybe-uninitialized]
    num7++;
          ^
/in/foo.cc: In function 'int num8(int)':
/in/foo.cc:135:10: warning: 'num8' may be used uninitialized in this function [-Wmaybe-uninitialized]
    num8++;
          ^
/in/foo.cc: In function 'int num9(int)':
/in/foo.cc:150:10: warning: 'num9' may be used uninitialized in this function [-Wmaybe-uninitialized]
    num9++;
          ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:158:2: warning: 'xmin' may be used uninitialized in this function [-Wmaybe-uninitialized]
  for(;xmin<=xmax;xmin++)
  ^~~