chrcounta()
function in C++:c++
#include <iostream>
#include <string>
using namespace std;
void chrcounta(string str) {
int count[26] = {0}; // initialize count array with 0
for(int i = 0; i < str.length(); i++) {
if(str[i] >= 'a' && str[i] <= 'z') {
count[str[i] - 'a']++;
}
}
for(int i = 0; i < 26; i++) {
if(count[i] != 0) {
cout << (char)('a' + i) << ": " << count[i] << endl;
}
}
}
int main() {
string str = "Hello World!";
chrcounta(str);
return 0;
}
chrcounta()
function takes a string as input and counts the occurrence of each alphabet letter in the string. It does this by initializing an array count
of size 26 (one for each letter of the alphabet) with all elements set to 0. It then loops through each character in the string and, if the character is a lowercase letter, increments the count for that letter in the count
array. Finally, it loops through the count
array and prints out the count for each letter that occurred at least once in the string.main()
function, we simply call chrcounta()
with a sample string "Hello World!" to test the function.chrcounta()
function that counts the occurrence of each alphabet letter in a string:def chrcounta(string):
# Initialize the count dictionary with all letters as keys and 0 as values
count_dict = {chr(i): 0 for i in range(65, 91)}
# Count the occurrence of each letter in the string
for char in string:
if char.isalpha():
count_dict[char.upper()] += 1
# Return the count dictionary
return count_dict
main()
function to get the desired output:def main():
string = input("Enter a string: ")
count_dict = chrcounta(string)
print("Count:")
for letter, count in count_dict.items():
if count > 0:
print(f"{letter}={count}")
else:
print(f"{letter}=0")
main()
function and enter the string "Object-Oriented Programming", you should get the following output:Enter a string: Object-Oriented Programming
Count:
A=1
B=1
C=1
D=1
E=3
F=0
G=2
H=0
I=2
J=0
K=0
L=0
M=2
N=2
O=3
P=1
Q=0
R=3
S=0
T=2
U=0
V=0
W=0
X=0
Y=0
Z=0
chrcount
function in C++:#include <iostream>
#include <cstring>
#include <cctype>
using namespace std;
void chrcount(char str[]) {
int count[26] = {0}; // array to store count of each letter
int len = strlen(str);
for (int i = 0; i < len; i++) {
if (isalpha(str[i])) { // check if character is an alphabet
int index = toupper(str[i]) - 'A'; // convert to uppercase and get index
count[index]++; // increment count for that letter
}
}
// print the count for each letter
for (int i = 0; i < 26; i++) {
if (count[i] > 0) {
cout << (char)('A' + i) << "=" << count[i] << endl;
}
}
}
int main() {
char str[100];
cout << "Enter a string: ";
cin.getline(str, 100);
cout << "Count:" << endl;
chrcount(str);
return 0;
}
chrcount
function takes a character array str
as input and counts the occurrence of each alphabet letter in the string. It initializes an array count
of size 26 (one for each letter of the alphabet) to all zeros. It then loops through each character in the string and checks if it is an alphabet letter using the isalpha
function. If it is, it converts the character to uppercase using the toupper
function and subtracts 'A'
to get the index in the count
array. It then increments the count for that letter.count
array and prints the count for each letter that has occurred at least once.main
function, we first get the input string using cin.getline
and then call the chrcount
function to count the letters and print the results.chrcounta()
function in C++ that counts the occurrence of all alphabet letters in a given string:#include <iostream>
#include <string>
#include <unordered_map>
void chrcounta(const std::string& str) {
std::unordered_map<char, int> count_map;
for (char c : str) {
if (std::isalpha(c)) {
count_map[tolower(c)]++;
}
}
for (char c = 'a'; c <= 'z'; c++) {
std::cout << c << ": " << count_map[c] << std::endl;
}
}
int main() {
std::string str = "Hello World!";
chrcounta(str);
return 0;
}
chrcounta()
function takes in a std::string
parameter str
and creates an std::unordered_map
to store the count of each alphabet letter. It then iterates through each character in the string, checks if it's an alphabet letter using the std::isalpha()
function, and increments the count of the corresponding letter in the map. Finally, it prints out the count of each letter in alphabetical order.main()
function, we create a sample string "Hello World!" and call the chrcounta()
function on it. The output of this program would be:a: 0
b: 0
c: 0
d: 1
e: 1
f: 0
g: 0
h: 1
i: 0
j: 0
k: 0
l: 3
m: 0
n: 0
o: 2
p: 0
q: 0
r: 1
s: 0
t: 0
u: 0
v: 0
w: 1
x: 0
y: 0
z: 0
#include <iostream>
#include <string>
#include <map>
void chrcounta(const std::string& str) {
std::map<char, int> counts;
for (char c : str) {
if (std::isalpha(c)) {
counts[std::toupper(c)]++;
}
}
for (char c = 'A'; c <= 'Z'; c++) {
std::cout << c << "=" << counts[c] << std::endl;
}
}
int main() {
std::string str;
std::cout << "Enter a string: ";
std::getline(std::cin, str);
std::cout << "Count:" << std::endl;
chrcounta(str);
return 0;
}
Thanks very muchHere's a possible implementation of the chrcounta() function in C++:
C++:#include <iostream> #include <string> #include <map> void chrcounta(const std::string& str) { std::map<char, int> counts; for (char c : str) { if (std::isalpha(c)) { counts[std::toupper(c)]++; } } for (char c = 'A'; c <= 'Z'; c++) { std::cout << c << "=" << counts[c] << std::endl; } } int main() { std::string str; std::cout << "Enter a string: "; std::getline(std::cin, str); std::cout << "Count:" << std::endl; chrcounta(str); return 0; }
The chrcounta() function takes a string as input and creates a map to store the count of each alphabet letter. It iterates over each character in the string and checks if it's an alphabet letter using the std::isalpha() function. If it is, it converts it to uppercase using std::toupper() and increments the corresponding count in the map.
Finally, the function loops over all the alphabet letters from 'A' to 'Z' and prints their counts. Note that letters that don't appear in the string will have a count of 0.
In the main() function, we simply read a string from the user and call the chrcounta() function to print the letter counts.
You're welcome! If you have any other questions or need further assistance, feel free to ask.Thanks very much
Can you show other program about my question?You're welcome! If you have any other questions or need further assistance, feel free to ask.
Sure, here's another possible implementation of the chrcounta() function in C++:Can you show other program about my question?
#include <iostream>
#include <string>
#include <map>
void chrcounta(const std::string& str) {
std::map<char, int> counts;
for (int i = 0; i < str.length(); i++) {
char c = str[i];
if (c >= 'A' && c <= 'Z') {
counts[c]++;
} else if (c >= 'a' && c <= 'z') {
counts[c - 'a' + 'A']++;
}
}
for (char c = 'A'; c <= 'Z'; c++) {
std::cout << c << "=" << counts[c] << std::endl;
}
}
int main() {
std::string str;
std::cout << "Enter a string: ";
std::getline(std::cin, str);
std::cout << "Count:" << std::endl;
chrcounta(str);
return 0;
}
Can you show that the int main () is on the top?Sure, here's another possible implementation of the chrcounta() function in C++:
C++:#include <iostream> #include <string> #include <map> void chrcounta(const std::string& str) { std::map<char, int> counts; for (int i = 0; i < str.length(); i++) { char c = str[i]; if (c >= 'A' && c <= 'Z') { counts[c]++; } else if (c >= 'a' && c <= 'z') { counts[c - 'a' + 'A']++; } } for (char c = 'A'; c <= 'Z'; c++) { std::cout << c << "=" << counts[c] << std::endl; } } int main() { std::string str; std::cout << "Enter a string: "; std::getline(std::cin, str); std::cout << "Count:" << std::endl; chrcounta(str); return 0; }
The chrcounta() function works similarly to the previous implementation, but uses a different approach to count the letters. It iterates over each character in the string using a for loop and checks if it's an uppercase or lowercase letter using ASCII codes. If it's an uppercase letter, it increments the corresponding count in the map. If it's a lowercase letter, it converts it to uppercase by subtracting 'a' and adding 'A' and then increments the corresponding count in the map.
Finally, the function loops over all the alphabet letters from 'A' to 'Z' and prints their counts. Note that letters that don't appear in the string will have a count of 0.
In the main() function, we simply read a string from the user and call the chrcounta() function to print the letter counts.
In C++, the main() function is typically defined at the top of the file, before any other functions. Here's an example implementation of the program with the main() function defined at the top:Can you show that the int main () is on the top?
#include <iostream>
#include <string>
#include <map>
int main() {
std::string str;
std::cout << "Enter a string: ";
std::getline(std::cin, str);
std::cout << "Count:" << std::endl;
std::map<char, int> counts;
for (int i = 0; i < str.length(); i++) {
char c = str[i];
if (c >= 'A' && c <= 'Z') {
counts[c]++;
} else if (c >= 'a' && c <= 'z') {
counts[c - 'a' + 'A']++;
}
}
for (char c = 'A'; c <= 'Z'; c++) {
std::cout << c << "=" << counts[c] << std::endl;
}
return 0;
}
ucfirst
function in C++:#include <iostream>
#include <string>
// Function to convert the first letter of a string to upper case
void ucfirst(std::string& str) {
if (!str.empty()) {
str[0] = std::toupper(str[0]);
}
}
int main() {
// Example usage
std::string s = "hello world";
ucfirst(s);
std::cout << s << std::endl; // "Hello world"
return 0;
}
ucfirst
function takes a reference to a std::string
as its argument. It checks if the string is not empty, and if not, it converts the first character of the string to upper case using the std::toupper
function from the <cctype>
header.main
function, we create a string s
and pass it to ucfirst
. After the function call, the first letter of s
is converted to upper case. We then print the modified string to the console.