The function “reverse” reverses a given string and returns a pointer to the resulting string. Complete the missing parts.   char* reverse( char* str ) { int n, h, j, k; char _________________;   n = strlen( _____________); h = (n / 2); for ( j=0, k=(n - 1); (j < h); j++, _____________________ ) {      tmp = ___________;    str[k] = str[j];      str[j] = _______________________________; } return ________________________;}   int main( int argc, char** argv ) { char s[512]; strcpy( s, argv[1] ); printf( "Reverse: %s\n", reverse( s ) ); return 0;}

#include <iostream>using namespace std; char* duplicateWithoutBlanks(char *word){int len = sizeof(word); char *new_str = new char[len + 1]; int k = 0; for (int i = 0; i < len; ++i){if (word[i] != ' ')new_str[k++] = word[i];} new_str[k] = '\0'; return new_str;} int main(){// Testing code char word[] = "Hello, World!"; char* result = duplicateWithoutBlanks(word); cout<< "word: "<< word<< "\nResult: "<< result; ; return 0;}     What to change to out put the same word without blank?

c++problem

#include<stdio.h>#include<string.h>struct info{char names[100];int age;float wage;};int main(int argc, char* argv[]) {int line_count = 0;int index, i;struct info hr[10];if (argc != 2)printf("Invalid user_input!\n");else {FILE* contents = fopen (argv[1], "r");struct info in;if (contents != NULL) {printf("File has been opened successfully.\n\n");while (fscanf(contents, "%s %d %f\n",hr[line_count].names, &hr[line_count].age, &hr[line_count].wage) != EOF) {printf("%s %d %f\n", hr[line_count].names, hr[line_count].age, hr[line_count].wage);line_count++;}printf("\nTotal number of lines in document are: %d\n\n", line_count);fclose(contents);printf("Please enter a name: ");char user_input[100];fgets(user_input, 30, stdin);user_input[strlen(user_input)-1] = '\0';index = -1;for(i = 0; i < line_count; i++){if(strcmp(hr[i].names, user_input) == 0){index = i;break;}}if(index == -1)printf("Name %s not found\n", user_input);else{while(fread(&in, sizeof(struct info), 1,…