C Exercises: Count the number of vowels and consonants

C Pointer : Exercise-13 with Solution

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

Sample Solution:

C Code:

#include <stdio.h>
int main()
{
    char str1[50];
    char *pt;
    int  ctrV,ctrC;
 	printf("\n\n Pointer : Count the number of vowels and consonants :\n"); 
	printf("----------------------------------------------------------\n");	    
    printf(" Input a string: ");
    fgets(str1, sizeof str1, stdin);
     
    //assign address of str1 to pt
    pt=str1;
     
    ctrV=ctrC=0;
    while(*pt!='\0')
    {
        if(*pt=='A' ||*pt=='E' ||*pt=='I' ||*pt=='O' ||*pt=='U' ||*pt=='a' ||*pt=='e' ||*pt=='i' ||*pt=='o' ||*pt=='u')
            ctrV++;
        else
            ctrC++;
        pt++; //pointer is increasing for searching the next character
    }
     
    printf(" Number of vowels : %d\n Number of consonants : %d\n",ctrV,ctrC-1);        
    return 0;
}

Sample Output:

Pointer : Count the number of vowels and consonants :                                                        
----------------------------------------------------------                                                    
 Input a string: string                                                                                       
 Number of vowels : 1                                                                                         
 Number of consonants : 5   

Flowchart:

C Programming Code Editor:

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