Compilare: user.cpp: In function ‘int main()’: user.cpp:368:56: warning: too many arguments for format [-Wformat-extra-args] fprintf(fout,"d %d 2",i,j+1); ^ user.cpp:324:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&n,&m); ^ user.cpp:325:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%c",&cx[0]); ^ user.cpp:329:28: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(cx+1,130,fin); ^