foo.c: In function 'main':
foo.c:9:12: warning: implicit declaration of function 'strcmp' [-Wimplicit-function-declaration]
    9 |         if(strcmp(a,b)==0)
      |            ^~~~~~
foo.c:2:1: note: include '<string.h>' or provide a declaration of 'strcmp'
    1 | #include <stdio.h>
  +++ |+#include <string.h>
    2 | 
foo.c:9:19: warning: passing argument 1 of 'strcmp' makes pointer from integer without a cast [-Wint-conversion]
    9 |         if(strcmp(a,b)==0)
      |                   ^
      |                   |
      |                   char
foo.c:9:19: note: expected 'const char *' but argument is of type 'char'
foo.c:9:21: warning: passing argument 2 of 'strcmp' makes pointer from integer without a cast [-Wint-conversion]
    9 |         if(strcmp(a,b)==0)
      |                     ^
      |                     |
      |                     char
foo.c:9:21: note: expected 'const char *' but argument is of type 'char'

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