Program for strlen function in string function
Program for strlen funtion: #include<iostream> #include<cstring> using namespace std; int main() { char str[10]="HELLO"; char str2[100]="world"; char str3[20]; int len; strcpy(str3,str); cout<<"\nstrcpy(str3,str) : "<<str3; strcpy(str, str2); cout<<"\nstrcpy(str, str2): "<<str; len=strlen(str); cout<<"\nthe lenghth of "<<str<<" is "<<len; } output: strcpy(str3,str) : HELLO strcpy(str, str2): world the lenghth of world is 5