CSCI151 L24 P2

#include <stdio.h>

void stringCopy(char *fromStr, char *toStr) {
    while (*fromStr!='\0'){
        *toStr=*fromStr;
        toStr++;
        fromStr++;
    }
    *toStr='\0';
}

_Bool areEqual(char *str1, char *str2) {
    while (*str1!='\0' && *str2!='\0'){
        if (*str1==*str2){
            str1++;
            str2++;
        }
        else
            return 0;
    }
    if (*str1==*str2)
        return 1;
    else
        return 0;
}

void reverse(char *fromStr, char *toStr) {
    int n;
    for (n=0; *fromStr!='\0'; n++, fromStr++);
    fromStr--;
    int i;
    for (i=0; i<n; i++){
        *toStr=*fromStr;
        fromStr--;
        toStr++;
    }
    *toStr='\0';
}

void concatenate(char *str1, char *str2, char *resultStr) {
    int i;
    while (*str1!='\0'){
        *resultStr=*str1;
        resultStr++;
        str1++;
    }

    while (*str2!='\0'){
        *resultStr=*str2;
        resultStr++;
        str2++;
    }
    *resultStr='\0';
}

int main(void) {

    char word1[] = "Hello";
    char word2[] = "Hi there";
    char word3[] = {'H', 'e', 'l', 'l', 'o', '\0', 'X'};
    char word4[] = "Hi";

    char result[50];

    // Test code for stringCopy
    stringCopy(word1, result);
    printf("Test 1.1 result: %s\n", result);
    stringCopy(word2, result);
    printf("Test 1.2 result: %s\n", result);
    stringCopy(word3, result);
    printf("Test 1.3 result: %s\n", result);

    // Test code for areEqual
    printf("Test 2.1 result: %i\n", areEqual(word1, word2));
    printf("Test 2.2 result: %i\n", areEqual(word1, word3));
    printf("Test 2.3 result: %i\n", areEqual(word2, word4));
    printf("Test 2.4 result: %i\n", areEqual(word4, word2));

    // Test code for reverse
    reverse(word1, result);
    printf("Test 3.1 result: %s\n", result);
    reverse(word2, result);
    printf("Test 3.2 result: %s\n", result);
    reverse(word3, result);
    printf("Test 3.3 result: %s\n", result);

    // Test code for concatenate
    concatenate(word1, word2, result);
    printf("Test 4.1 result: %s\n", result);
    concatenate(word3, word4, result);
    printf("Test 4.2 result: %s\n", result);
    concatenate(word1, word1, result);
    printf("Test 4.3 result: %s\n", result);

    return 0;
}