C Exercises: Calculate the length of the string
C Pointer: Exercise-10 with Solution
Write a program in C to calculate the length of a string using a pointer.
Pictorial Presentation:

Sample Solution:
C Code:
#include <stdio.h>
int calculateLength(char*);
void main()
{
char str1[25];
int l;
printf("\n\n Pointer : Calculate the length of the string :\n");
printf("---------------------------------------------------\n");
printf(" Input a string : ");
fgets(str1, sizeof str1, stdin);
l = calculateLength(str1);
printf(" The length of the given string %s is : %d ", str1, l-1);
printf("\n\n");
}
int calculateLength(char* ch) // ch = base address of array str1 ( &str1[0] )
{
int ctr = 0;
while (*ch != '\0')
{
ctr++;
ch++;
}
return ctr;
}
Sample Output:
Pointer : Calculate the length of the string : --------------------------------------------------- Input a string : w3resource The length of the given string w3resource is : 10
Flowchart:

C Programming Code Editor:
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Next: Write a program in C to swap elements using call by reference.
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