52 lines
1.3 KiB
C++
52 lines
1.3 KiB
C++
/*
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AUTORE: Manuel Vichi 3^AIN
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Esercizio 6 File Binari
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*/
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#include <stdio.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <time.h>
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using namespace std;
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int countBitOne(const char string[], const unsigned bit, const size_t lenght) {
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unsigned count = 0;
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for (size_t i = 0; i < lenght; i++) {
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if ((string[i] >> bit) & 1) {
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count++;
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}
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}
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return count;
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}
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void generate(char string[], const size_t size) {
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srand(time(NULL));
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for (size_t i = 0; i < size; i++) {
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string[i] = (rand() % 26) + 'A';
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}
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}
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int writeBinary(const char * fileName, const char arr[], const size_t count) {
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FILE* file = fopen(fileName,"wb");
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if (file != NULL) {
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int written = fwrite(arr,sizeof(char),count,file);
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fclose(file);
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return written;
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} else {
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perror("Errore durante l'apertura del file di scrittura");
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return -1;
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}
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return -1;
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}
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int main(void) {
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char fileName[] = "girmilloblu.bin";
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char arr[10];
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unsigned bitNumber = 3;
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generate(arr,sizeof(arr));
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printf("Array generato: ");
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for (unsigned i = 0; i < sizeof(arr); i++) {
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printf("%c", arr[i]);
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}
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printf("\n");
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size_t count = sizeof(arr) / sizeof(arr[0]);
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printf("Valori scritti nel file %s: %d\n", fileName, writeBinary(fileName,arr,count));
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printf("Byte con il bit %d a 1: %d", bitNumber, countBitOne(arr,bitNumber,sizeof(arr)));
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return 0;
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}
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