Can i use strlen()with string type

#1

i typed this code
#include
#include

using namespace std;

int main()
{
string s1, s2;
int t;
cin>>t;
while(t–)
{cin >> s1 >> s2;
int len=strlen(s1);
cout<<len;
}
return 0;
}
WHY IS THERE AN ERROR IN STRLEN PART?

#2

The answer of your query is present in the syntax of strlen() function.

strlen(const char *str)

It is clear from the syntax that it accepts a string of char type as it’s argument.

To use it with the string type you must write the following statement:

strlen(s1.c_str());

Here, c_str() function is used to returns a pointer to an array that contains a null-terminated sequence of characters representing the current value of the string type.

Hope, this would help.
If you still have doubts, feel free to ask.
Give a like if you are satisfied. :wink:

#3

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