If a class doesn\'t have any constructors, what will happen?

If a class doesn\'t have any constructors, what will happen? ,Java, C ,C++, ASP, ASP.net C# ,Struts ,Questions & Answer, Struts2, Ajax, Hibernate, Swing ,JSP , Servlet, J2EE ,Core Java ,Stping, VC++, HTML, DHTML, JAVASCRIPT, VB ,CSS, interview ,questions, and answers, for,experienced, and fresher

If a class doesn\'t have any constructors, the compiler will supply the default constructor.

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main() { int c[ ]={2.8,3.4,4,6.7,5}; int j,p=c,q=c; for(j=0;j<5;j++) { printf(" %d ",c); ++q; } for(j=0;j<5;j++){ printf(" %d ",p); ++p; } }
main() { extern int i; i=20; printf("%d",i); }
main() { int i=-1,j=-1,k=0,l=2,a; a=i++&&j++&&k++\|\|l++; printf("%d %d %d %d %d",i,j,k,l,a); }
main() { int c=- -2; printf("c=%d",c); }
#define int char main() { int i=65; printf("sizeof(i)=%d",sizeof(i)); }
main() { int a=10; a=!a>14; Printf ("a=%d",a); }
#include main() { char s[]={'a','b','c','\n','c','\0'}; char p,str,str1; p=&s[3]; str=p; str1=s; printf("%d",++p + ++*str1-32); }
#include main() { int a[2][2][2] = {{10,2,3,4},{5,6,7,8}}; int p,q; p=&a[2][2][2]; q=*a; printf("%d----%d",p,*q); }
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main() { int i=1; while (i<=5) { printf("%d",i); if (i>2) goto here; i++; } } fun() { here: printf("PP"); }