foo.c:2:9: warning: #pragma once in main file
    2 | #pragma once
      |         ^~~~
foo.c: In function 'main':
foo.c:23:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   23 |     scanf("%d %d %d", &number_of_people, &number_of_competition, &ranking);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
foo.c:26:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   26 |         scanf("%d", &People[i].score);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
foo.c:30:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   30 |         scanf("%d", &People[i].strength_value);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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