Find Length of String using Pointer
Write a C Program to Find Length of String using Pointers. Here’s simple Program to Find Length of String using Pointers in C Programming Language.
What are Pointers?
A pointer is a variable whose value is the address of another variable, i.e., direct address of the memory location. Like any variable or constant, you must declare a pointer before using it to store any variable address.
The general form of a pointer variable declaration is −
- type *var-name;
Here, type is the pointer’s base type; it must be a valid C data type and var-name is the name of the pointer variable.
The asterisk * used to declare a pointer is the same asterisk used for multiplication. However, in this statement the asterisk is being used to designate a variable as a pointer.
The unary or monadic operator & gives the “address of a variable’”.
The indirection or dereference operator * gives the “contents of an object pointed to by a pointer”.
Below is the source code for C Program to Find Length of String using Pointers which is successfully compiled and run on Windows System to produce desired output as shown below :
SOURCE CODE : :
/* C Program to Find Length of String using Pointers */ #include<stdio.h> #include<conio.h> int string_ln(char*); int main() { char str[20]; int length; printf("Enter any string :: "); scanf("%s",str); length = string_ln(str); printf("\nThe length of the given string [ %s ] is : %d\n", str, length); return 0; } int string_ln(char*p) /* p=&str[0] */ { int count = 0; while (*p != '\0') { count++; p++; } return count; }
Output : :
/* C Program to Find Length of String using Pointers */ Enter any string :: CodezClub The length of the given string [ CodezClub ] is : 9 Process returned 0
Above is the source code for C Program to Find Length of String using Pointers which is successfully compiled and run on Windows System.The Output of the program is shown above .
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