foo.c: In function 'main':
foo.c:8:17: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    8 |                 scanf("%d %d",&i[k],&j[k]) ;
      |                 ^~~~~
foo.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | 
foo.c:8:17: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    8 |                 scanf("%d %d",&i[k],&j[k]) ;
      |                 ^~~~~
foo.c:8:17: note: include '<stdio.h>' or provide a declaration of 'scanf'
foo.c:25:5: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   25 |     printf("0");
      |     ^~~~~~
foo.c:25:5: note: include '<stdio.h>' or provide a declaration of 'printf'
foo.c:25:5: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
foo.c:25:5: note: include '<stdio.h>' or provide a declaration of 'printf'
foo.c:32:28: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
   32 |                            printf("%d",(k+1));
      |                            ^~~~~~
foo.c:32:28: note: include '<stdio.h>' or provide a declaration of 'printf'

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