50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <conio.h>
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int main() {
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unsigned long long int size = 0;
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unsigned int gib = 0;
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printf("please enter the number of gibibytes (GiB) you would like to allocate (1 GiB = 1073741824 bytes):\n> ");
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unsigned int digit = 0;
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while (1) {
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unsigned char input = getchar();
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if (input == '\n') break;
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if (input < '0' || input > '9') continue;
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if (digit > 0) gib = gib * 10;
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gib = gib + (unsigned int) input - 48;
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digit++;
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}
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size = (unsigned long long int) gib * 1024 * 1024 * 1024;
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printf("you are about to allocate %d GiB (%llu bytes) of heap memory. are you sure? (y/n)\n> ", gib, size);
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unsigned char input = getchar();
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if (input != 'y') return 0;
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while (getchar() != '\n');
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printf("please wait");
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unsigned long long int* wtf = (unsigned long long int*) malloc(size);
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for (unsigned long long int i = 0; i < size / sizeof(long long int); i++) {
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wtf[i] = 0x80085;
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if (i > 0 && i % (1024 * 1024 * 1024 / sizeof(long long int)) == 0) printf(".");
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}
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printf("\n");
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printf("%d GiB (%llu bytes) of heap memory has been allocated. you are insane.\n", gib, size);
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printf("press ENTER to release this memory, or CTRL+C to exit the program.\n");
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getchar();
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free(wtf);
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return 0;
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}
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