C Program To Find Length of String
Learn How To Find the Length of String in C Programming. We have used Two Methods that describes the usage of String Length Function strlen() and another program that describes finding String length using Pointers and without strlen() Library Function in C.
A String is basically an Array of Characters indicated by ‘\0’ as its terminating character.
Method 1: C Program To Calculate Length of a String using strcat() Library Function
1 2 3 4 5 6 7 8 9 10 11 12 13 | #include<stdio.h> #include<string.h> int main() { char str_data[20] = "CodingAlpha"; int string_length; string_length = strlen(str_data); printf("\nString: %s\n", str_data); printf("\nLength: %d\n", string_length); printf("\n"); return 0; } |
Method 2: Calculate Length of String without using strlen()
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | #include<stdio.h> int strlenfunc(char *); int main() { char str_data[20]; int string_length; printf("Enter a String:\t"); scanf("%s", str_data); string_length = strlenfunc(str_data); printf("\nString: %s", str_data); printf("\nString Length: %d", string_length); printf("\n"); return 0; } int strlenfunc(char *ptr) { int count = 0; while(*ptr != '\0') { count++; ptr++; } return(count); } |
Output
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