strncpy() is not intended to be used as a safer strcpy(), it is supposed to be used to insert one string in the middle of another. All those "safe" string handling functions such as snprintf() and vsnprintf() are fixes that have been added in later standards to mitigate buffer overfl...
Now, if the string pointed to byswas in an array of characters just long enough to contain the string and the terminating NUL, thebehaviourwill beundefinedif we access the string past the null terminator, for example in char*str ="hello world";// orchararray[] ="hello world...
SESSIONNAME USERNAME ID STATE TYPE DEVICE I'm calling it via this C++ function (the codebase uses char* extensively hence the type): char*concat(constchar*s1,constchar*s2){char* result = (char*)malloc(strlen(s1) +strlen(s2) +1);// +1 for the null-terminatorstrcp...
The strcpy(char_ptr, "This memory is located on the heap."); line uses that address when it copies the data from the second argument (the string literal) into the bytes starting at that address – and it continues doing so until it finds the nul-terminator at the end of that literal ...
-= NULL) { strcpy(temp_name, chk); chk = strtok(NULL, " \t"); } } --snip -- Problem: I am guessing extra character is getting added to the end of the temp_name(not just the name) due to improper handling in strtok delimitter usage. solution: if(!strncmp(temp...
char u[1][50]; strcpy(u[0],"test"); strcpy(u[1],"test 2"); printf("%s \n",u[1]); But, in an int array you just need one []. Is it for the array index number or is it for the value? Regardless of the answer to that question … Why isn't there...
// write to fileintmain(void){structEmployeeemp;emp.id =1;strcpy(emp.name,"John"); emp.salary =10000.0; FILE *file = fopen("employee.txt","w");if(file ==NULL) {printf("Could not open file employee.txt.\n");return1; }if(fwrite(&emp,sizeof(structEmployee),1, file) ==1) {...
/* strcpy: copy t to s; array subscript version */ void strcpy(char *s, char *t) { int i; i = 0; while((s[i] = t[i]) != '\0') i ++; } For contrast, here is a version of strcpy with pointers: /* strcpy: copy t to s; pointer version 1 */ void strcpy(char *...
You need to use resize instead of reserve and you must shrink the std::string after calling the C function, so that its size fits the position of the Null terminator character. Note that the string-buffer inside std::string has a length of string.size() + 1, because a ...
}intmain(intargc,constchar**argv){in_socket_tsock_r;structifreqifreq_i={0}, ifreq_c = {0}, ifreq_ip = {0};unsignedchar*packet =NULL;structether_header*eth=NULL;structifaddrs*ifaddr=NULL;unsignedintif_c =0, pckt_len =0;structether_addr*eth_daddr;ssize_tsend_len;constinton_f ...