C program to count number of vowels and consonants in a string using pointer

By | 01.12.2016

Count number of vowels and consonants


Write a C program to count number of vowels and consonants in a string using pointer. Here’s simple program to count number of vowels and consonants in a string using pointer 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 count number of vowels and consonants in a string using pointer which is successfully compiled and run on Windows System to produce desired output as shown below :


SOURCE CODE : :


/*  C program to count number of vowels and consonants in a string using pointer  */

#include <stdio.h>
int main()
{
    char str[100];
    char *ptr;
    int  cntV,cntC;

    printf("Enter any string :: ");
    scanf("%s",str);

    //assign address of str to ptr
    ptr=str;

    cntV=cntC=0;
    while(*ptr!='\0')
    {
        if(*ptr=='A' ||*ptr=='E' ||*ptr=='I' ||*ptr=='O' ||*ptr=='U' ||*ptr=='a' ||*ptr=='e' ||*ptr=='i' ||*ptr=='o' ||*ptr=='u')
            cntV++;
        else
            cntC++;
        //increase the pointer, to point next character
        ptr++;
    }

    printf("\nTotal number of VOWELS :: %d and CONSONANTS :: %d\n\n",cntV,cntC);

    return 0;
}

Output : :


/*  C program to count number of vowels and consonants in a string using pointer  */


Enter any string :: CodezClub

Total number of VOWELS :: 3 and CONSONANTS :: 6

Process returned 0

Above is the source code for C program to count number of vowels and consonants in a string using pointer which is successfully compiled and run on Windows System.The Output of the program is shown above .

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About Tunde A

My name is Tunde Ajetomobi, a Tech Enthusiast and Growth Hacker. I enjoy creating helpful content that solves problem across different topics. Codezclub is my way of helping young aspiring programmers and students to hone their skills and find solutions on fundamental programming languages.

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Jesus Eduardo Garcia Rios

line 9 produces a problem

codezclub  Post author

Thanks for telling error, Since we have corrected the error at line 9 ,you must check again and feel free to ask any question if you found any error again…….Thanks for visiting

Codez Club

Thanks for telling error, Since we have corrected the error at line 9 ,you must check again and feel free to ask any question if you found any error again…….Thanks for visiting