Compilare: user.cpp: In function ‘int main()’: user.cpp:50:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi, "%d", &v); ^ user.cpp:51:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi, "%d%d", &n, &m); ^ user.cpp:116:25: warning: ‘s_cul’ may be used uninitialized in this function [-Wmaybe-uninitialized] fputc(s_cul, fo); ^ user.cpp:106:21: warning: ‘prc’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(parc[i][j]==prc) ^