foo.c: In function 'findsecmax':
foo.c:4:17: warning: unused variable 'x' [-Wunused-variable]
    4 |         int i,t,x,max=-1e9,max2=-1e9;
      |                 ^
foo.c:18:11: warning: 't' may be used uninitialized [-Wmaybe-uninitialized]
   18 |         if(t>0)
      |           ^
foo.c:4:15: note: 't' was declared here
    4 |         int i,t,x,max=-1e9,max2=-1e9;
      |               ^

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