C Program to Find Length of String Without using Library Function

C Program to Find Length of String Without using Library Function

It is easier to find the length of the string using given library function, but in this program we are finding the length of the string without using library function.

Explanation of Program :

In the above program we have accepted the string from the user.

After that we have initialized the length variable with zero. “length” variable is used to keep track of the number of character accessed.
Initially length is 0. Now we are accessing very first character. If it is equal to NULL then we are terminating the loop else we are incrementing the length.

Dry Run :

Consider input string – “mumbai”.

While loop Iterationlengthstr[length]
Before While Loop0m
After Iteration 11u
After Iteration 22m
After Iteration 33b
After Iteration 44a
After Iteration 55i
After Iteration 76Loop Terminated
Now last step is to print the length of the string –