foo.cc: In function 'int main()':
foo.cc:8:19: error: invalid operands of types 'const char [10]' and 'int' to binary 'operator&'
  scanf("%d,%d,%d,"&x,&y,&z);
        ~~~~~~~~~~~^~
foo.cc:10:21: warning: unknown conversion type character ',' in format [-Wformat=]
  printf("%,2f,price");
                     ^

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