I have written this program to count the number of words in a string. I have checked my program for the worst case-case scenario. If any of you, can find any casecases for which this program doesn't work, please let me know. So so that iI can work and improve it.
And just to be clear, we don't want symbols like, "," , "!" , "?", "." , "\n" to be counted as words. But obviously, "I" should be counted as word, as we consider it in the language. I have made sure of all this by replacing them with spaces. Let me know if iI have missed something.
Is this a good solution?
How How can I improve the code?
#include <iostream>
#include <string>
void replace(std::string& str, char x, char y);
int countWords(std::string x);
int main(){
std::cout<<countWords(" \n \t Hello, world ! ");
}
void replace(std::string& const str, char x, char y){
for(unsigned int i=0;i<str.size();i++){
if(str[i]==x) str[i]=y;
}
}
int countWords(std::string x){
replace(x,',',' ');
replace(x,'.',' ');
replace(x,'!',' ');
replace(x,'?',' ');
replace(x,'(',' ');
replace(x,')',' ');
replace(x,'\n',' ');
replace(x,'\t',' ');
replace(x,'"',' ');
if(x.empty()) return 0;
int Num=1;
for(unsigned int i=1;i<x.size();i++){
if(x[i]==' ' && x[i-1]!=' ') Num++;
}
if(x.back() == ' ') Num--;
return Num;
}