foo.c: In function 'main':
foo.c:15:22: warning: unused variable 't' [-Wunused-variable]
   15 |  int a,b,c,d,n,fz,fm,t;
      |                      ^
foo.c:15:19: warning: unused variable 'fm' [-Wunused-variable]
   15 |  int a,b,c,d,n,fz,fm,t;
      |                   ^~
foo.c:15:16: warning: unused variable 'fz' [-Wunused-variable]
   15 |  int a,b,c,d,n,fz,fm,t;
      |                ^~
foo.c:15:12: warning: unused variable 'd' [-Wunused-variable]
   15 |  int a,b,c,d,n,fz,fm,t;
      |            ^
foo.c:15:10: warning: unused variable 'c' [-Wunused-variable]
   15 |  int a,b,c,d,n,fz,fm,t;
      |          ^
foo.c: In function 'gy':
foo.c:12:1: warning: control reaches end of non-void function [-Wreturn-type]
   12 | }
      | ^
foo.c: In function 'main':
foo.c:16:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   16 |  scanf("%d",&n);
      |  ^~~~~~~~~~~~~~
foo.c:20:4: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   20 |    scanf("%d",&a);
      |    ^~~~~~~~~~~~~~
foo.c:23:4: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   23 |    scanf("%d",&b);
      |    ^~~~~~~~~~~~~~

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