/in/foo.c: In function 'main':
/in/foo.c:4:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'scanf'
    4 |         scanf("%d,%d,%d",&a,&b,&c);
      |         ^~~~~
/in/foo.c:5:16: error: 'c' undeclared (first use in this function)
    5 |         if(a+b>c&&a+c>b&&b+c>a){
      |                ^
/in/foo.c:5:16: note: each undeclared identifier is reported only once for each function it appears in