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#include <iostream>
using namespace std;
bool isDigit(char ch)
{
return ch >= '0' && ch <= '9';
}
int countDigits(const char* str)
{
//int len = strlen(str);
//int count = 0;
//for (int i = 0; i < len; i++)
//{
// if (isDigit(str[i]))
// count++;
//}
int count = 0;
while (*str != '\0')
{
if (isDigit(*str))
count++;
str++;
}
return count;
}
void removeDigits(const char* str, char* resultStr)
{
while (*str != '\0')
{
if (!isDigit(*str))
{
*resultStr = *str;
resultStr++;
}
str++;
}
*resultStr = '\0';
}
int main()
{
const char* str = "hello friends 123 , how are you? 343. Fine!";
int len = strlen(str) - countDigits(str);
char* resultStr = new char[len + 1];
removeDigits(str, resultStr);
cout << resultStr << endl;
delete[] resultStr;
}
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