47 lines
1010 B
C++
47 lines
1010 B
C++
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#include <cstdio>
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#include <cstdlib>
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#include <ctime>
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#include <climits>
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int main(int argc, char **argv) {
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const char *filename = "a.bin";
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int bytes_count = 256;
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if (argc > 1)
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filename = argv[1];
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if (argc > 2)
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bytes_count = atoi(argv[2]);
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auto hex_file = fopen(filename, "wb");
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if (hex_file == NULL) {
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return -1;
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}
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srand(time(NULL));
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constexpr int chunk_size = 0x400;
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unsigned char buffer[chunk_size];
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for (int total_bytes = bytes_count; chunk_size < total_bytes; total_bytes -= chunk_size) {
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memset(buffer, 0, chunk_size);
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for (int i = 0; i < chunk_size; ++ i) {
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buffer[i] = rand() % UCHAR_MAX;
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}
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fwrite(buffer, chunk_size, 1, hex_file);
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}
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memset(buffer, 0, chunk_size);
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for (int i = 0; i < bytes_count % chunk_size; ++ i) {
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buffer[i] = rand() % UCHAR_MAX;
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}
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fwrite(buffer, bytes_count % chunk_size, 1, hex_file);
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fclose(hex_file);
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return 0;
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}
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