Compilare: main.cpp: In function 'int main()': main.cpp:119:13: warning: unused variable 'pos' [-Wunused-variable] int pos = dr; ^~~ main.cpp:49:9: warning: unused variable 'dSums' [-Wunused-variable] int dSums = 0; ^~~~~ main.cpp:58:9: warning: unused variable 'vf' [-Wunused-variable] int vf = 0; ^~ main.cpp: In function 'void read(int&)': main.cpp:19:36: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff,1,dim,stdin); ^ main.cpp:30:36: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff,1,dim,stdin); ^ main.cpp: In function 'int main()': main.cpp:35:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("take5.in", "r", stdin); ^ main.cpp:36:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("take5.out", "w", stdout); ^ main.cpp:38:28: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff,1,dim,stdin); ^