foo.c: In function 'count':
foo.c:4:8: warning: unused variable 'count' [-Wunused-variable]
    4 |  int i,count=0;
      |        ^~~~~
foo.c: In function 'main':
foo.c:15:8: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   15 |  while(s1[i]=getchar()!='\n')
      |        ^~
foo.c:18:8: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   18 |  while(s2[i]=getchar()!='\n')
      |        ^~
foo.c:15:13: warning: 'i' is used uninitialized in this function [-Wuninitialized]
   15 |  while(s1[i]=getchar()!='\n')
      |        ~~~~~^~~~~~~~~~~~~~~~

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