Compilare: user.cpp: In function ‘int main()’: user.cpp:94:33: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘us* {aka short unsigned int*}’ [-Wformat=] fs(f, "%d", &a[i][j]); ^ user.cpp:88:20: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fs(f, "%d", &n); ^ user.cpp:94:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fs(f, "%d", &a[i][j]); ^