programming code
#include <stdio.h>
#include <string.h>
#include <string.h>
int check_vowel(char);
int main()
{
char s[100], t[100];
int c, d = 0;
{
char s[100], t[100];
int c, d = 0;
printf("Enter a string to delete vowels\n");
gets(s);
gets(s);
for(c = 0; s[c] != '\0'; c++) {
if(check_vowel(s[c]) == 0) { // If not a vowel
t[d] = s[c];
d++;
}
}
if(check_vowel(s[c]) == 0) { // If not a vowel
t[d] = s[c];
d++;
}
}
t[d] = '\0';
strcpy(s, t); // We are changing initial string. This is optional.
printf("String after deleting vowels: %s\n", s);
return 0;
}
}
int check_vowel(char ch)
{
if (ch == 'a' || ch == 'A' || ch == 'e' || ch == 'E' || ch == 'i' || ch == 'I' || ch =='o' || ch=='O' || ch == 'u' || ch == 'U')
return 1;
else
return 0;
}
{
if (ch == 'a' || ch == 'A' || ch == 'e' || ch == 'E' || ch == 'i' || ch == 'I' || ch =='o' || ch=='O' || ch == 'u' || ch == 'U')
return 1;
else
return 0;
}
Output of program:


C programming code using pointers
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
int check_vowel(char);
main()
{
char string[100], *temp, *pointer, ch, *start;
printf("Enter a string\n");
gets(string);
temp = string;
pointer = (char*)malloc(100);
if( pointer == NULL )
{
printf("Unable to allocate memory.\n");
exit(EXIT_FAILURE);
}
#include<stdlib.h>
#include<string.h>
int check_vowel(char);
main()
{
char string[100], *temp, *pointer, ch, *start;
printf("Enter a string\n");
gets(string);
temp = string;
pointer = (char*)malloc(100);
if( pointer == NULL )
{
printf("Unable to allocate memory.\n");
exit(EXIT_FAILURE);
}
start = pointer;
while(*temp)
{
ch = *temp;
if ( !check_vowel(ch) )
{
*pointer = ch;
pointer++;
}
temp++;
}
*pointer = '\0';
pointer = start;
strcpy(string, pointer); /* If you wish to convert original string */
free(pointer);
printf("String after removing vowel(s): \"%s\"\n", string);
return 0;
}
int check_vowel(char a)
{
if (a == 'a' || a == 'e' || a == 'i' || a == 'o' || a == 'u')
return 1;
else if (a == 'A' || a == 'E' || a == 'I' || a == 'O' || a == 'U')
return 1;
else
return 0;
}
while(*temp)
{
ch = *temp;
if ( !check_vowel(ch) )
{
*pointer = ch;
pointer++;
}
temp++;
}
*pointer = '\0';
pointer = start;
strcpy(string, pointer); /* If you wish to convert original string */
free(pointer);
printf("String after removing vowel(s): \"%s\"\n", string);
return 0;
}
int check_vowel(char a)
{
if (a == 'a' || a == 'e' || a == 'i' || a == 'o' || a == 'u')
return 1;
else if (a == 'A' || a == 'E' || a == 'I' || a == 'O' || a == 'U')
return 1;
else
return 0;
}
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