lasere.cpp: In function 'int main()': lasere.cpp:6: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result lasere.cpp:7: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result lasere.cpp:8: warning: 'elem1' may be used uninitialized in this function lasere.cpp:8: warning: 'elem2' may be used uninitialized in this function lasere.cpp:8: warning: 'elem3' may be used uninitialized in this function lasere.cpp:8: warning: 'elem4' may be used uninitialized in this function lasere.cpp:8: warning: 'elem5' may be used uninitialized in this function lasere.cpp:8: warning: 'elem6' may be used uninitialized in this function lasere.cpp:8: warning: 'elem7' may be used uninitialized in this function lasere.cpp:8: warning: 'elem8' may be used uninitialized in this function