#include <stdio.h>
#include <stdlib.h>
#include <time.h>
/* run this program using the console pauser or add your own getch, system("pause") or input loop */

void myFunction(int *integer){
	*integer *=5;
}


void fillArrayRandom(int *array,int elements){
	srand(time(NULL));
	int i=0;
	for(i=0;i<elements;i++){
		array[i] = rand()%100;
	}
}

void printArray(int *array,int elements){
	int i=0;
	for(i = 0 ; i< elements;i++){
		printf("myArray[%d] = %d\n",i,array[i]);
	}
}

void fillArrayRandomV2(int *array,int elements){
	srand(time(NULL));
	int i=0;
	for(i=0;i<elements;i++){
		// show the pointer position in memory
		//printf("myArray[%d] = %d\n",i,array+i);
		*(array+i) = rand()%100;
	}
}

int *createRandomArray(int elements){
	int *retVal = (int *)malloc(sizeof(int)*elements);
	fillArrayRandom(retVal,elements);
	return retVal;
}

void createRandomArrayV2(int **array,int elements){
	srand(time(NULL));
	int i=0;
	*array = malloc(sizeof(int)*elements);
	for(i=0;i<elements;i++){
		*(*array+i) = rand()%100;
	}
}
void print2DArray(int **array,int rows,int cols){
	int i,j;
	for(i =0;i<rows;i++){
		for(j=0;j<cols;j++){
			printf("%d ",array[i][j]);
		}
		printf("\n");
	}
}
int** createRandom2DArray(int rows,int cols){
	srand(time(NULL));
	int i,j;
	int** retVal = (int **)malloc(sizeof(int*) * rows);
	for(i=0;i<rows;i++){
		retVal[i] = (int *)malloc(sizeof(int)*cols);
		for(j=0;j<cols;j++){
			retVal[i][j] = rand()%100;
		}
	}
	return retVal;
}

void createRandom2DArrayV2(int ***array,int rows,int cols){
	srand(time(NULL));
	int i,j;
	*array = (int **) malloc(sizeof(int *) * rows);
	for(i=0;i<rows;i++){
		(*array)[i] = (int *)malloc(sizeof(int) * cols);
		for(j=0;j<cols;j++){
			(*array)[i][j] = rand()%100;
		}
	}

}

void myRandom2DEvenArray(){
	srand(time(NULL));
	int length =0;
	int i=0;
	int tmp = 0;
	int *array;
	printf("Please give me the length of the array: ");
	scanf("%d",&length);
	array = (int*) malloc(sizeof(int)*length);
	for(i=0;i<length;i++){
		//while((array[i] = rand()%100)%2 != 0);
		while(1){
			array[i] = rand()%100;
			if(array[i] %2 ==0){
				break;
			}
		}
	}
	printf("\nYour array is: \n\n");
	for(i=0;i<length;i++){
		printf("array[%d] = %d\n",i,array[i]);
	}
}
void printToFile(char *filePath, char *myString){
	int length = strlen(myString);
	int i=0;
	FILE *fp = fopen(filePath,"w+");
	if(fp){
		for(i=0;i<length;i++){
			fputc(myString[i],fp);
		}
		fclose(fp);
	}else{
		printf("Can't open file or directory");
	}
}
void printToFileV2(char *filePath, char *myString){
	int i=0;
	FILE *fp = fopen(filePath,"w+");
	if(fp){
		fputs(myString,fp);
		fclose(fp);
	}else{
		printf("Can't open file or directory");
	}
}
void printToFileV3(char *filePath, char *myString){
	int i=0;
	FILE *fp = fopen(filePath,"w+");
	if(fp){
		fprintf(fp,"%s",myString);
		fclose(fp);
	}else{
		printf("Can't open file or directory");
	}
}

void readAndPrintFile(char *filePath){
	char tmp;
	FILE *fp = fopen(filePath,"r+");
	if(fp){
		while((tmp=fgetc(fp))!=EOF){
			printf("%c",tmp);
		}
		fclose(fp);
	}else{
		printf("Can't open file or directory");
	}
}
void readAndPrintFileV2(char *filePath){
	char buffer[1024];
	FILE *fp = fopen(filePath,"r+");
	if(fp){
		while(fgets(buffer,1024,fp)){
			printf("%s",buffer);
		}
		fclose(fp);
	}else{
		printf("Can't open file or directory");
	}
}
void readAndPrintFileV3(char *filePath){
	char buffer[1024];
	FILE *fp = fopen(filePath,"r+");
	if(fp){
		while(fscanf(fp,"%s",buffer)!=EOF){
			printf("%s",buffer);
		}
		fclose(fp);
	}else{
		printf("Can't open file or directory");
	}
}
int main(int argc, char *argv[]) {
	char *file = "C:\\Users\\didiamantis\\Desktop\\test.txt";
	printToFileV3(file,"Hello world!\n 1234\n\n\n3");
	readAndPrintFileV3(file);
	//myRandom2DEvenArray();
	return 0;
	int array[30];
	fillArrayRandomV2(&array,30);
	//printArray(array,30);
	printf("\n----createRandomArray----\n");
	int *myRandomArray = createRandomArray(10);
	//printArray(myRandomArray,10);

	printf("\n----createRandomArray----\n");
	int *myRandomArrayv2;
	createRandomArrayV2(&myRandomArrayv2,10);
	//printArray(myRandomArrayv2,10);
	printf("\n----createRandom2DArray----\n");
	int **my2DArray = createRandom2DArray(5,5);
	print2DArray(my2DArray,5,5);

	printf("\n----createRandom2DArrayV2----\n");
	int **my2DArray2;
	createRandom2DArrayV2(&my2DArray2,5,5);
	print2DArray(my2DArray2,5,5);
	return 0;
}