Q1) Why should you use strncpy instead of strcpy? Q2) Is strncpy is safe? Q3) Is strncpy leading to a segmentation fault. If yes then please describe the scenario. Q4) Describe the scenario when the behavior of
strcpy(person->name,"John Doe"); } Reallocating memory:realloc()is used to resize previously allocated memory blocks. 1int*arr=malloc(10*sizeof(int)); 2if(arr!=NULL){ 3// Resize array to 20 integers 4int*temp=realloc(arr,20*sizeof(int)); ...
strcpy(this->file_name, name); } char* mysql::get_name() { return this->file_name; }main.cpp1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 #include"foo.h" #include<iostream> using namespace std; int main() { mysql *my = new mysql(); my->init_num(4); int num = my...
// Then, ready to be usedsaSample.sin_family = AF_INET;// In typical app. we can be directly use:// usesaSample.sin_addr.s_addr = inet_addr(argv[1]);saSample.sin_addr.s_addr = ulAddr;saSample.sin_port = htons(1234);
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{ strcpy(sh_mem, "NEW DATA Stored by Child Process\0"); printf("child pid - %d\n", getpid()); exit(EXIT_SUCCESS); } else { pid_t ret = waitpid(child_pid, &status, WUNTRACED | WCONTINUED); if (ret == -1) perror("waitpid"); if (WIFEXITED(status)) printf("Child exited, ...
To use GDB, we'd bettter build the binary without optimization flags, such as -O0. Let's build and run it: $ gcc -O0 -g mem_pool.c -o mem_pool $ ./mem_pool "This is string a." "string b." Length of string a: 17 string s: This is st Length of string b: 9 string ...
Instead of create a dum copy of the entire array of structure I would use one dummy structure (better, a temp variable for each unique type in the structure) and swa the contents as needed. For example, to swap the contents in a simple sort by your cid element, would look like: ...
We can also use strcpy() and c_str() functions to convert a string into a character array in C++. The c_str() method returns a pointer to a null-terminated sequence of characters for a string object. We can copy these characters in our char array using strcpy() function. See the be...
fprintf(stderr,"At this point we can use chunk0_ptr to overwrite itself to point to an arbitrary location.n");charvictim_string[8];strcpy(victim_string,"Hello!~"); chunk0_ptr[3] = (uint64_t) victim_string;fprintf(stderr,"chunk0_ptr is now pointing where we want, we use it to...