// The following code is meant to take two string inputs from the user and
// concatenate them together. However, there are a number of mistakes in the
// code that are causing it to not work as intended. Can you find and fix the
// errors? Good luck!

#include <stdio.h>
#include <string.h>

void strip_newline(char *string);

int main(void) {
    char str1[50];
    char str2[50];
    char concat[100];
    int length1;
    int length2;

    printf("Enter the first string: ");
    fgets(&str1, 50, stdin);
    strip_newline(str1);

    printf("Enter the second string: ");
    fgets(&str2, 50, stdin);
    strip_newline(str2);

    length1 = strlen(str1);
    length2 = strlen(str2);

    if (len1 + len2 >= 100) {
        printf("Error: Strings are too long to concatenate\n");
        return 1;
    }
    
    for (int i = 0; i <=len1 + len2; i++) {
        concat[i] = str1[i];
    }
    
    for (int i = len1; i <= len2; i++) {
        concat[i] = str2[i];
    }

    printf("%c\n", concat[0]);

    return 0;
}

// Removes newline from end of the given string if it exists
// NOTE: This function is correct as given.
// You do not need to modify it for this question.
void strip_newline(char *string) {
    int length = strlen(string);
    if (length != 0 && string[length - 1] == '\n') {
        string[length - 1] = '\0';
    }
}