isdigit ??

[scu1casper]

How can I check if a string contains numbers?
I tried isdigit, but it isn't working.

[Volatile Pulse]

isdigit(c) returns true if the character c is a number 0-9. Since you're using a string, an array of characters, you need to loop through the entire string with a for loop, and then check each character to see if it is a digit. A sample would be:

1 2 3 4 5 6 7 8 9 10 11 12 13 14

#include <iostream> #include <string> #include <cctype> int main() { std::string myString = "My age is 15"; for (int i = 0; i < myString.length(); i ++) if (isdigit(myString[i]) std::cout << "A number was found at index " << i << ": " << myString[i] << "\n"; return 0; }

A number was found at index 10: 1 A number was found at index 11: 5

[scu1casper]

Gotcha. Ok. With the for loop it actually works...i appreciate it.

Thanks!