HP Integrity NonStop H-Series - Manual (Page 177)

void countCaps(char c) { if (isupper(c)) capCount++; }
The following example counts the number of capital letters in a string value:
string advice = "Never Trust Anybody Over 30!";
for_each(advice.begin(), advice.end(),countCaps);
cout << "upper-case letter count is " << capCount << endl;