foo.c: In function 'main':
foo.c:6:13: warning: unused variable 'm' [-Wunused-variable]
 { int n,b,c,m;
             ^
foo.c:6:11: warning: unused variable 'c' [-Wunused-variable]
 { int n,b,c,m;
           ^
foo.c:6:9: warning: unused variable 'b' [-Wunused-variable]
 { int n,b,c,m;
         ^
foo.c: In function 'cjss':
foo.c:17:10: warning: unused variable 'c' [-Wunused-variable]
  { int b,c,x,y;
          ^
foo.c: In function 'main':
foo.c:8:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ^~~~~~~~~~~~~~

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