I am getting an undeclared identifier error for the string text although I identified it previously.

I am trying to create the for loop to run between 0 and strlen(text). Does anyone know what I am missing?

    #include <cs50.h>
    #include <stdio.h>
    #include <ctype.h>
    #include <math.h>
    #include <string.h>
    #include <stdlib.h>

    int main(int argc, string argv[])

    {

        int key = atoi(argv[1]);

        printf("%i\n", key);

        if (argc != 2)
        {
        printf("Usage: ./ceasar key\n");
        }

        else
        {
        string text = get_string("Plaintext: ");
        }

        for(int i = 0, len = strlen(text); i < len; i  )
        {

        }
    }

CodePudding user response：

Your "string text" variable is only getting defined within the else statement, so you need to move your for loop into the same else statement:

    int main(int argc, string argv[])
    
    {
    
        int key = atoi(argv[1]);
    
        printf("%i\n", key);
    
        if (argc != 2)
        {
            printf("Usage: ./ceasar key\n");
        }
    
        else
        {
            string text = get_string("Plaintext: ");
    
            for(int i = 0, len = strlen(text); i < len; i  )
            {
    
            }
        }
    }