/in/ex2.c: In function 'main':
/in/ex2.c:13:20: error: passing argument 1 of 'strcmp' makes pointer from integer without a cast [-Werror=int-conversion]
         if (strcmp(string2,string)==0){
                    ^~~~~~~
In file included from /in/ex2.c:2:0:
/usr/include/string.h:136:12: note: expected 'const char *' but argument is of type 'char'
 extern int strcmp (const char *__s1, const char *__s2)
            ^~~~~~
cc1: all warnings being treated as errors