Compilare: user.cpp: In function ‘int main()’: user.cpp:9:33: warning: variable ‘ok’ set but not used [-Wunused-but-set-variable] int n , m ,x, j ,i ,cpj ,z ,ok; ^ user.cpp:10:32: 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:23:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin ,"%d" ,&x); ^ user.cpp:24:50: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] while(x==0) fscanf(fin ,"%d" ,&x); ^