This program takes a strings from user and removes all characters in that string except alphabets.
Source Code to Remove Characters in String Except Alphabets
printf("Enter a string: ");
for(i=0; line[i]!='\0'; ++i)
while (!((line[i]>='a'&&line[i]<='z') || (line[i]>='A'&&line[i]<='Z' || line[i]=='\0')))
printf("Output String: ");
Enter a string: p2'r"o@gram84iz./
Output String: programiz
This program takes a string from user and for loop executed until all characters of string is checked. If any character inside a string is not a alphabet, all characters after it including null character is shifted by 1 position backwards.