sumb.cpp: In function 'bool aduna()': sumb.cpp:21: warning: name lookup of 'i' changed sumb.cpp:5: warning: matches this 'i' under ISO standard rules sumb.cpp:12: warning: matches this 'i' under old rules sumb.cpp: In function 'int main()': sumb.cpp:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result sumb.cpp:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result sumb.cpp:41: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result sumb.cpp:41: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result sumb.cpp:41: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result