serialize in C - save/load array binary

/*
Github: https://github.com/nezvers
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*/

#include <stdio.h>
#include <stdlib.h>

void write_text(){
    FILE *fp;
    char str[] = "This is serialization first test \nI wonder how it looks like.";

    fp = fopen( "file.txt" , "w" );
    fwrite(str , 1 , sizeof(str) , fp );

    fclose(fp);
}

void load_text(){
    FILE *fp;
    int c;

    fp = fopen("file.txt","r");
    while(1) {
        c = fgetc(fp);
        if( feof(fp) ) {
         break ;
        }
        printf("%c", c);
    }
    fclose(fp);
}

typedef struct{
    int dataSize;
    int *data;
}myData;

void Serialize(){
    int nums[] = {0,1,2,3,4,5,6,7,8,9};                         //Array to save

    myData toSave = {0};                                        //init struct
    toSave.dataSize = sizeof(nums)/sizeof(int);                 //mark count of entries
    toSave.data = nums;                                         //assign array to save

    FILE* fp = fopen("myData.sav","wb");                        //prepare file to write binary
    fwrite(&toSave.dataSize, sizeof(toSave.dataSize), 1, fp);   //write entries count
    fwrite(toSave.data, sizeof(int)*toSave.dataSize, 1, fp);    //write the data
    fclose(fp);                                                 //close the file
}

void DeSerialize(){
    myData toLoad = {0};                                        //init struct

    FILE* fp = fopen("myData.sav","rb");                        //prepare file to read binary
    fread(&toLoad.dataSize, sizeof(int), 1, fp);                //read(point to variable, size, how many entries, point to file)
    toLoad.data = (int*)calloc(toLoad.dataSize, sizeof(int));   //allocate memory for incoming data
    fread(toLoad.data, sizeof(int) * toLoad.dataSize, toLoad.dataSize, fp); //read data (point to data pointer, size of entries * count, how many entries, point to file)
    fclose(fp);                                                 //close file

    for(int i = 0; i < toLoad.dataSize; i++){
        printf("%i", i);
    }
    free(fp);                                                   //free allocated memory
}

int main () {
    Serialize();
    DeSerialize();
    printf("\nDone\n");
    return(0);
}