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hackerrank.c:6:16: error: expected expression string s = get_string(); 

hackerrank.c:6:16: error: expected expression string s = get_string(); ^ /data/data/com.termux/files/usr/local/include/cs50.h:109:53: note: expanded from macro 'get_string' ...get_string(NULL, __VA_ARGS__) ^ 1 error generated. 

$ cd <unzip_directory>/tests $ cc -lcs50 hackerrank.c $ ./a.out Message here: <type stuff> hello, <type stuff output> $ 

$ cd <unzip_directory>/tests 

realize that the files in tests are using an older CS50 API so

in hackerrank.c needs to be changed from

string s = get_string();

to

string s = get_string("Type here:");

for it to compile correctly. Otherwise you'll get errors like

hackerrank.c:6:16: error: expected expression string s = get_string(); 

So once the edit is made. Compile the code.

$ cc -lcs50 hackerrank.c $ ./a.out Type here: <type stuff> hello, <type stuff output> $ 

$ ln -s libcs50.so.10.1.0 libcs50.so.10 $ ln -l .... libcs50.a .... libcs50.so -> libcs50.so.10.1.0 .... libcs50.so.10 -> libcs50.so.10.1.0 .... libcs50.so.10.1.0 

$ ln -s libcs50.so.10.1.0 libcs50.so.10 $ ls -l .... libcs50.a .... libcs50.so -> libcs50.so.10.1.0 .... libcs50.so.10 -> libcs50.so.10.1.0 .... libcs50.so.10.1.0