operatii1.cpp: In function 'long long unsigned int back(long long unsigned int)': operatii1.cpp:34: warning: format '%d' expects type 'int', but argument 2 has type 'long long unsigned int' operatii1.cpp:36: warning: format '%d' expects type 'int', but argument 2 has type 'long long unsigned int' operatii1.cpp:32: warning: suggest explicit braces to avoid ambiguous 'else' operatii1.cpp:38: warning: format '%d' expects type 'int', but argument 2 has type 'long long unsigned int' operatii1.cpp:40: warning: format '%d' expects type 'int', but argument 2 has type 'long long unsigned int' operatii1.cpp:42: warning: format '%d' expects type 'int', but argument 2 has type 'long long unsigned int' operatii1.cpp:56: warning: no return statement in function returning non-void operatii1.cpp: In function 'int main()': operatii1.cpp:63: warning: comparison between signed and unsigned integer expressions operatii1.cpp:59: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result operatii1.cpp:60: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result operatii1.cpp:62: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result operatii1.cpp:64: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result