Compilare: user.cpp: In function ‘int main()’: user.cpp:63:32: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘std::vector<int>::size_type {aka long unsigned int}’ [-Wformat=] fprintf(fo,"%d\n", V.size()); ^ user.cpp:49:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d", &n); ^ user.cpp:50:55: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i = 1; i <= n; i++) fscanf(fi,"%d", &v[i]); ^ user.cpp:53:65: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int x; fscanf(fi,"%d", &x), s[i] += x, joc[i][j] = x; ^