if statement won't work specifically it won't register spaces

so i'm making a program that counts letters and only letters and to do that i need to -1 to the counter everytime it goes through a symbol in the loop(ex:?,!,") and below is a draft of the program but it seems that it won't -1 everytime there's a space(space is 32 in ascii) i even tried to see if input[i]==32 is space by making the condition in the for loop input[i]!=32 and it stopped at the space between the first and second word so i don't know why it isn't working in the if statement.

#include <stdio.h>
#include <cs50.h>

int main (void)
{
    int p;
    string input=get_string("text: ");
    for (int i=0;input[i]!='\0';i++)
    {
        
        printf("%c",input[i]);
        p=i+1;
         if (input[i]=='!'||input[i]==32)
        {
           p=i-1;
        }
    }

    printf("\n");
    printf("%i",p);
}```