Compilare: main.cpp: In function 'int af_mat(int (*)[1005])': main.cpp:29:35: warning: format '%f' expects argument of type 'double', but argument 2 has type 'int' [-Wformat=] printf("%f", mat[i][j]); ^ main.cpp:39:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:43:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ace.in", "r", stdin); ^ main.cpp:44:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ace.out", "w", stdout); ^ main.cpp:46:28: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(f, 1, MAX, stdin); ^ main.cpp: In function 'void Read(int&)': main.cpp:17:45: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(f, MAX, 1, stdin), pos = 0; ^ main.cpp:22:43: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(f, MAX, 1, stdin), pos=0; ^