split.cpp: In function 'int main()': split.cpp:88: warning: suggest explicit braces to avoid ambiguous 'else' split.cpp:81: warning: suggest explicit braces to avoid ambiguous 'else' split.cpp:8: warning: unused variable 'k' split.cpp:8: warning: unused variable 'y' split.cpp:6: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result split.cpp:7: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result split.cpp:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result split.cpp:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result split.cpp:8: warning: 'a' may be used uninitialized in this function split.cpp:8: warning: 'b' may be used uninitialized in this function split.cpp:8: warning: 'c' may be used uninitialized in this function