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Toggle all characters in the string in C++
This program translates the characters of a string into uppercase. However, this task can be easily achieved by using the toUpper() method of the c++ class library. But in this program, we perform this by calculating the ASCII value of characters in uppercase. The Algorithm is as follows;
Algorithm
START Step-1: Declare the array of char Step-2: Check ASCII value of uppercase characters which must grater than A and lesser than Z Step-3: Check ASCII value of lower characters which must grater than A and lesser than Z END
The toggleChar() method gets the array of characters as an input. Then, traverse through the loop to ensure whether the entered character ASCII value is in the between of the A to Z or not, as following;
Example
#include<iostream>
using namespace std;
void toggleChars(char str[]){
for (int i=0; str[i]!='\0'; i++){
if (str[i]>='A' && str[i]<='Z')
str[i] = str[i] + 'a' - 'A';
else if (str[i]>='a' && str[i]<='z')
str[i] = str[i] + 'A' - 'a';
}
}
int main(){
char str[] = "ajay@kumar#Yadav";
cout << "String before toggle::" << str << endl;
toggleChars(str);
cout << "String after toggle::" << str;
return 0;
}The supplied string has almost all characters in lower case which will be converted in uppercase as following;
Output
String before toggle::ajay@kumar#Yadav String after toggle::AJAY@KUMAR#yADAV
Updated on: 29-Nov-2019
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