Question

Submit two C++ files:

1. Write a C++ program that declares an array alpha of 50 components of type double. Initialize the array so that the first 25 components are equal to the square of the index variable, and the last 25 components are equal to three times the index variable. Output the array so that 10 elements per line are printed.

2. Write a program that prompts the user to input a string and outputs the string in uppercase letters. (Use a character array to store the string.)

Answer 1

#include <iostream> using namespace std; int main() { double alpha[50]; int i; // FIRST 25 numbers to square of index for(i=0; i<25; i++) { alpha[i] = i*i; } // Next 25 numbers to cube of index for(i=0; i<50; i++) { alpha[i] = i*i*i; } // printing array for(i=0; i<50; i++) { cout << alpha[i] << " "; // printing new line after each 10 numbers if((i+1)%10 == 0) cout << endl; } } /*SAMPLE OUTPUT 0 1 8 27 64 125 216 343 512 729 1000 1331 1728 2197 2744 3375 4096 4913 5832 6859 8000 9261 10648 12167 13824 15625 17576 19683 21952 24389 27000 29791 32768 35937 39304 42875 46656 50653 54872 59319 64000 68921 74088 79507 85184 91125 97336 103823 110592 117649 */

#include <iostream> using namespace std; int main() { // taking user input char word[100]; cout << "Input a string: "; cin >> word; // looping through characters for(int i=0; word[i]; i++) { // if it is a lower case letter if(word[i] >= 'a' && word[i] <= 'z') // changing it to upper case word[i] = word[i] - 32; } cout << word; } /*SAMPLE OUTPUT Input a string: India INDIA */