How to remove segmentation fault in C++?

Reason: Accessing an address that is freed 
int* p = malloc(8); 
*p = 100; 
       
 free(p);       
 *p = 110; 
       
Solution: Before freeing the pointer check the assignment or any operation required to perform.
 
Reason: Accessing out of array index bounds
int arr[2]; 
arr[3] = 10;  
Solution: Correcting the array bound
 
Reason: Improper use of scanf()
int n = 2; 
scanf("%d",n); 
Solution: To avoid this is the only solution
 
Reason: Dereferencing uninitialized pointer
int *p; 
printf("%d",*p);
Solution: A pointer must point to valid memory before accessing it.
 
Reason: Stack Overflow
Solution: It can be resolved by having a base condition to return from the recursive function.