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

In this C program, we are counting the total number of vowels and consonants of a string using pointer.

Here, we are reading a string and assigning its base address to the character pointer, and to check characters are vowels or consonants, we will check and count each character one by one by increasing the pointer.

/*C program to count vowels and consonants in a string using pointer.*/
#include <stdio.h>
int main()
    char str[100];
    char *ptr;
    int  cntV,cntC;
    printf("Enter a string: ");
    //assign address of str to ptr
        if(*ptr=='A' ||*ptr=='E' ||*ptr=='I' ||*ptr=='O' ||*ptr=='U' ||*ptr=='a' ||*ptr=='e' ||*ptr=='i' ||*ptr=='o' ||*ptr=='u')
        //increase the pointer, to point next character
    printf("Total number of VOWELS: %d, CONSONANT: %d\n",cntV,cntC);        
    return 0;


Enter a string: This is a test string
Total number of VOWELS: 5, CONSONANT: 16

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