In the following C program we are counting the number of characters in a given String to find out and display its length on console. Upon execution of this program, the user would be asked to enter a string, then the program would count the chars and would display the length of input string as output.
C Program – finding length of a String without using standard library function strlen
/* C Program to find the length of a String without * using any standard library function */ #include <stdio.h> int main() { /* Here we are taking a char array of size * 100 which means this array can hold a string * of 100 chars. You can change this as per requirement */ char str[100],i; printf("Enter a string: \n"); scanf("%s",str); // '\0' represents end of String for(i=0; str[i]!='\0'; ++i); printf("\nLength of input string: %d",i); return 0; }
Output:
Leave a Reply