Remove all characters in a string except alphabet

Posted on Apr 22, 2020

C program to remove all characters in a string except alphabet.

Program

#include<stdio.h>
#include<conio.h>
#include<string.h>
#define MAX 50

void main()
{
	char str[MAX];
    int i, j, len;

    printf("Enter the string\t:");
    gets(str);

    len = strlen(str);

    for(i=0;i<len;i++)
    {
        if(!((str[i]>='a' && str[i]<='z') || (str[i]>='A' && str[i]<='Z')))
        {
            for(j=i;j<len;j++)
            {
                str[j] = str[j+1];
            }
            len = len-1;
            i--;
        }
    }

    str[len] = '\0';

    printf("\nModified string\t:%s",str);

    getch();
}

Output

Enter the string        :co23u'r;'sec\]rux

Modified string :coursecrux