#include #include using namespace std; /* Functions to change strings: 1.Make function that can replace one letter in the string (all occurances) with another 2.Make function to reverse string. 3.Make function that alternates on capital letters. 4.Make function to take out letters in string. */ void replace(string str, const char* l, const char* r){ for(int x = 0; x < str.size(); x++){ if(str[x] == *l){ str[x] = *r; } } cout << str << endl; } void reverse(string str){ int min = 0; int max = str.size() - 1; //str.size() is equal to the total spots in an array int l; while(min < max){ l = str[min]; str[min] = str[max]; str[max] = l; min++; max--; } cout << str << endl; } void alternate(string str){ char c; for(int x = 0; x < str.size(); x++){ c = str[x]; if(x % 2 != 0){ if(97 <= str[x] && str[x] <= 122){ c -= 32; } cout << c; } else if(65 <= str[x] && str[x] <= 90){ c += 32; cout << c; } else { cout << str[x]; } } cout << endl; } void takeOut(string str, int begin, int end){ for(int x = 0; x < str.size(); x++){ if( begin <= x && x <= end){ //nothing } else { cout << str[x]; } } cout << endl; } int main() { string str = "Hello World!"; cout << "1.Changed " << str << " to "; replace(str, "l", "r"); cout << "2.Reversed " << str << " to get "; reverse(str); cout << "3.Taking " << str << " and alternating capitals gets "; alternate(str); cout << "4.Taking ' world' out of " << str << " to get "; takeOut(str, 5,10); return 0; }

Manipulating Strings