foo.cc: In function 'int main()':
foo.cc:7:17: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'float*' [-Wformat=]
    7 |         scanf("%d,%d,%c",&a,&b,&c);
      |                ~^        ~~
      |                 |        |
      |                 int*     float*
      |                %e
foo.cc:7:20: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'float*' [-Wformat=]
    7 |         scanf("%d,%d,%c",&a,&b,&c);
      |                   ~^        ~~
      |                    |        |
      |                    int*     float*
      |                   %e
foo.cc:21:15: warning: 'sum' may be used uninitialized [-Wmaybe-uninitialized]
   21 |         printf("%.2f",sum);
      |         ~~~~~~^~~~~~~~~~~~
foo.cc:5:19: note: 'sum' was declared here
    5 |         float a,b,sum;
      |                   ^~~

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