/in/foo.c: In function 'FindiSecondMax':
/in/foo.c:4:8: warning: unused variable 'j' [-Wunused-variable]
  int i,j,index1,index2;
        ^
/in/foo.c: In function 'main':
/in/foo.c:16:32: warning: unused variable 'j' [-Wunused-variable]
  int a[10000],b[10000],n1,n2,i,j,s,t;
                                ^