C++
1.
#include<iostream>
#include<cstring>
int main()
{
char s1[20]="bonapart",s2[]="boy",*k;
std::cout<<"hey";
k=strstr(s1,s2);
std::cout<<k;
std::cout<<"bye";
}
OUTPUT
Hey
so why program is crashing here
2.
#include<iostream>
int main()
{
std::cout<<"hey";
std::cout<<nullptr;
std::cout<<"hey";
}
OUTPUT
[Error] ambiguous overload for 'operator<<' (operand types are 'std::ostream {aka std::basic_ostream<char>}' and 'std::nullptr_t')
why this error ?
C
1.
#include<stdio.h>
#include<string.h>
int main()
{
char s1[20]="bonapart",s2[]="boy",*k;
printf("Hey");
k=strstr(s1,s2);
printf("%s",k);
printf("bye");
}
OUTPUT
Hey(null)bye
works fine here
2.
#include<stdio.h>
int main()
{
printf("Hey");
printf("%s",NULL);
printf("bye");
}
OUTPUT
Hey(null)bye
works fine.
So why in C++ code is crashing at runtime due to null string though C works fine by just putting null for null string.
