Program of Calculating length of string in C | Programmerdouts

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Practice Program

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Program of Calculating length of string.

Solution:

void main()
{
    char s[20];
    int length;

    //taking string as input from the user.
    printf("Enter the string: ");
    gets(s);


    for(length = 0 ;s[length] != '\0'; length++);
    {
        //till backslash character does not occurs this loop will iterate.
            //as length variable is increasing at every iteration.
            //as for loop will complete its iteration then we will get the length of string.
    } //value in length variable is nothing but length of the string.


         printf("Length of string is %d",length);

}

Output1

Enter the string: programmerdouts

Length of string is 15.

Output2

Enter the string: programmer

Length of string is 10.

Output3

Enter the string: Hello

Length of string is 5.

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defining a function 'give_lenght' which will return length of string 

int give_lenght(char s[])
{    int length;
    for(length = 0; s[length]!='\0'; length++)
    {
            //till backslash character does not occurs this loop will iterate.
            //as length variable is increasing at every iteration.
            //as for loop will complete its iteration then we will get the length of string.
    } //value in length variable is nothing but length of the string.
         //returning length variable.
return length;
}

Using above define function 'give_lenght()':

void main()
{
    int lenght;

    lenght = give_lenght("Programmerdouts");
    printf("Length of the string is %d",lenght);
}

Output1

Length of the string is 15

Using above define function 'give_lenght()':

void main()
{
    int lenght;

    lenght = give_lenght("Code");
    printf("Length of the string is %d",lenght);
}

Output2

Length of the string is 4

Using above define function 'give_lenght()':

void main()
{
    int lenght;

    lenght = give_lenght("Computer");
    printf("Length of the string is %d",lenght);
}

Output3

Length of the string is 8

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