foo.c: In function 'main':
foo.c:7:9: warning: statement with no effect [-Wunused-value]
    7 |         scanf
      |         ^~~~~
foo.c:7:14: error: expected ';' before 'return'
    7 |         scanf
      |              ^
      |              ;
    8 |         return 0
      |         ~~~~~~
foo.c:5:13: warning: unused variable 'input' [-Wunused-variable]
    5 |         int input = 0;
      |             ^~~~~

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