foo.c: In function 'main':
foo.c:15:12: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'int' [-Wformat=]
   printf("%s %d",a[i],c[i]);
           ~^     ~~~~
           %d
foo.c:8:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ^~~~~~~~~~~~~~
foo.c:10:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s",&a[i]);
   ^~~~~~~~~~~~~~~~~
foo.c: In function 's':
foo.c:21:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s",&k);
  ^~~~~~~~~~~~~~
foo.c:22:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&m,&j);
  ^~~~~~~~~~~~~~~~~~~~
foo.c:32:4: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%s",&b[i]);
    ^~~~~~~~~~~~~~~~~