#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <Windows.h>

int countOccurence(char symbol, char* arr, int arrSize);
int getCharCode(char ch, char* arrWithCodes, int arrSize);

int main()
{
    FILE* file = NULL;
    char filename[100];
    printf("Enter filename: ");
    scanf("%s", &filename);

    file = fopen(filename, "r");
    if (file == NULL) {
        printf("Error, while opening file: %s", filename);
        system("Pause");
        return -1;
    }

    char ch;
    int chCounter = 0;

    // map
    char symbols[95];
    int symbols_occurs[95];
    int symbols_dec[95];

    for (int i = 0; i < 94; i++) {
        symbols[i] = (char)(i + 32);
        symbols_occurs[i] = 0;
        symbols_dec[i] = i + 32;
    }


    while ( (ch = fgetc(file)) != EOF) {
        chCounter++;
        int curr = getCharCode(ch, symbols, 95);
        symbols_occurs[curr] += 1;
    }

    // Prints statistic
    printf("Symbol => ASCII-DEC => ASCII-HEX => Count: \n");
    for (int i = 0; i < 94; i++) {
        if (symbols_occurs[i] != 0) {
            printf("%c => %d => %x => %d \n", symbols[i], symbols_dec[i], symbols[i], symbols_occurs[i]);
        }
    }

    fclose(file);

    char srchCh;
    printf("Type character, to search for: ");
    scanf(" %c", &srchCh);

    int srchChCode = getCharCode(srchCh, symbols, 95);
    int srchChOccurs = symbols_occurs[srchChCode];


    printf("Frequence: %f ", (((double)srchChOccurs / (double)chCounter)) );

    char chToBeSWP;
    char chToSWP;
    printf("Which character you want to swap and with what? ");
    scanf(" %c %c", &chToBeSWP, &chToSWP);

    FILE* outputFile = fopen("output.txt", "w");
    while ()

    system("Pause");
    return 0;
}

int countOccurence(char symbol, char* arr, int arrSize) {
    int result = 0;

    for (int i = 0; i < arrSize; i++) {
        if (arr[i] == symbol) {
            result++;
        }
    }

    return result;
}

int getCharCode(char ch, char* arrWithCodes, int arrSize) {
    for (int i = 0; i < arrSize; i++) {
        if (arrWithCodes[i] == ch) {
            return i;
        }
    }
}