/in/foo.c: In function 'main':
/in/foo.c:17:28: warning: format '%lf' expects argument of type 'double', but argument 3 has type 'int' [-Wformat=]
        printf("%.2lf + %.2lfi/n%.2lf - %.2lfi",x1,0,x2,0);}
                            ^
/in/foo.c:17:44: warning: format '%lf' expects argument of type 'double', but argument 5 has type 'int' [-Wformat=]
        printf("%.2lf + %.2lfi/n%.2lf - %.2lfi",x1,0,x2,0);}
                                            ^