Question

in C++ Write a program that will take a sentence from the user and uses a ​for loop​ to convert all lowercase characters to uppercase characters. Then output the converted sentence. Example, if the user enters “Hello World”, your program should output “HELLO WORLD”.​ Recall that the ASCII value of ‘A’ is 65 and the ASCII value of ‘a’ is 97. The ASCII value of ‘Z’ is 90 and the ASCII value of ‘z’ is 122. in c++… we can only use for (….) and toupper()

Answer 1

#include <iostream>
#include <cstring>
using namespace std;

int main()
{
char str[100];
int len=0;
cout<<"Enter the Sentence: ";
//cin.getline() is used to read the input from user with spaces
cin.getline(str,100);
//loop to find the length of the string
for(int i=0;str[i]!='\0';i++)
{
len++;
}
cout<<"After Convertion: ";
//loop to convert the letters from lower case to upper case
for(int i=0;i<len;i++)
{
//toupper() is used to convert lower case to upper case
str[i] = toupper(str[i]);
  
//Display the characters
cout << str[i];
}
return 0;
}