jeehak.cpp: In function 'void jeehak(int*)':
jeehak.cpp:4:10: warning: unused variable 's' [-Wunused-variable]
friends.cpp: In function 'void friends(int*, int, int*, int*)':
friends.cpp:7:14: error: return-statement with a value, in function returning 'void' [-fpermissive]
grader_friends.c: In function 'int main()':
grader_friends.c:46:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
grader_friends.c:52:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
grader_friends.c:53:68: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
grader_friends.c: At global scope:
grader_friends.c:18:12: warning: '__now__' defined but not used [-Wunused-variable]