Compilare: main.cpp: In function 'void afis_mat()': main.cpp:84:23: warning: ignoring return value of 'int system(const char*)', declared with attribute warn_unused_result [-Wunused-result] system("cls") ; ^ main.cpp: In function 'void solve()': main.cpp:94:37: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d", &n, &m) ; ^ main.cpp:98:55: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d ", &mat[i][j]) ; ^ main.cpp: In function 'int main()': main.cpp:135:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &tests) ; ^