/in/foo.c: In function 'PrimeCount':
/in/foo.c:8:6: warning: implicit declaration of function 'Prime' [-Wimplicit-function-declaration]
   if(Prime(a[i]))
      ^~~~~
/in/foo.c: In function 'Prime':
/in/foo.c:18:3: warning: this 'else' clause does not guard... [-Wmisleading-indentation]
   else
   ^~~~
/in/foo.c:24:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else'
   if(a==i)
   ^~