c - Copying a 2D array to a dynamically allocated 2D array outside of the function -

i have fullnames, 2d array has sorted full names in , want copy content sortednames, 2d array exists out side of function. (i ***sortednames parameter).

i dynamically allocated array, copying not succeed. program crashes after 4th attempt copy name fullnames sortednames. why?

stringcpy , stringlen functions created. same thing strcpy , strlen does.

/*allocating memory sortednames*/ *sortednames = (char**) malloc(n);/*n number of names*/  /*allocating memory each sortednames array*/ (i = 0; < n; i++) {     (*sortednames)[i] = (char*) malloc(stringlen(fullnames[i])+1); }   /*copying fullnames sortednames*/  (i = 0; < n; i++) {     stringcpy((*sortednames)[i],fullnames[i]); } 

you not allocate enough memory array of pointers, should allocate way:

*sortednames = (char**)malloc(n * sizeof(char *)); 

furthermore, why not use strlen , strcpy in place of stringlen , stringcpy? typo or these function perform function?

regarding cast on malloc return value, remove if not intend compile code c++ , write this:

*sortednames = malloc(n * sizeof(**sortednames)); 

regarding parentheses around **sortednames, aware not necessary can remove them or not depending on local style conventions.