foo.c: In function 'main':
foo.c:7:2: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    7 |  scanf("%d",&n);
      |  ^~~~~
foo.c:7:2: warning: incompatible implicit declaration of built-in function 'scanf'
foo.c:2:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
    1 | #include<time.h>
  +++ |+#include <stdio.h>
    2 | void insert(int a[],int x,int n);
foo.c:15:3: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   15 |   printf("%d ",a[i]);
      |   ^~~~~~
foo.c:15:3: warning: incompatible implicit declaration of built-in function 'printf'
foo.c:15:3: note: include '<stdio.h>' or provide a declaration of 'printf'

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