C program to find the length of a string
Given a string str. The task is to find the length of the string.
Examples:
Input: str = "Geeks" Output: Length of Str is : 4 Input: str = "GeeksforGeeks" Output: Length of Str is : 13
In the below program, to find the length of the string str, first the string is taken as input from the user using scanf in 
, and then the length of Str is calculated using 
and using 
method .
Below is the C program to find the length of the string.
Example 1: Using loop to calculate the length of string.
// C program to find the length of string #include <stdio.h> #include <string.h> int main() { char Str[1000]; int i; printf("Enter the String: "); scanf("%s", Str); for (i = 0; Str[i] != '\0'; ++i); printf("Length of Str is %d", i); return 0; } |
Output:
Enter the String: Geeks Length of Str is 5
Example 2: Using strlen() to find the length of the string.
// C program to find the length of // string using strlen function #include <stdio.h> #include <string.h> int main() { char Str[1000]; int i; printf("Enter the String: "); scanf("%s", Str); printf("Length of Str is %ld", strlen(Str)); return 0; } |
Output:
Enter the String: Geeks Length of Str is 5
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