it allocates memory

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ari melody 2024-02-11 00:36:54 +00:00
commit e8a8377330
Signed by: ari
GPG key ID: CF99829C92678188
3 changed files with 74 additions and 0 deletions

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.gitignore vendored Normal file
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*.exe
**/.DS_Store

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README.md Normal file
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# memory allocator
it allocates memory *(in gibibytes (GiB))*
## how to use
- run the executable
- enter how many gibibytes you want (max is how many gibibytes of memory you have)
- confirm (y)
- wait for the program to allocate the memory
- your memory is allocated
- press any key or CTRL+C to free the memory and exit the program
- ???
- profit
## how to compile
- get a c compiler (i use gcc)
- `gcc -o ./allocatememory.exe ./main.c`
- ???
- profit
## why
i was bored

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main.c Normal file
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#include <stdio.h>
#include <stdlib.h>
int main() {
long long unsigned int size = 0;
printf("please enter the number of sizes (GiB) you would like to allocate (i.e. 4 = 4GiB):\n> ");
int digit = 0;
while (1) {
char input = getchar();
if (input == '\n') break;
if (input < '0' || input > '9') continue;
char number = input - 48;
if (digit > 0) number = number * 10 * digit;
if (input == '0') number = 10 * digit;
size = size + number;
digit++;
}
size = size * 1024 * 1024 * 1024;
printf("you are about to allocate %llu bytes of heap memory. are you sure? (y/n)\n> ", size);
char input = getchar();
if (input != 'y') return 0;
while (getchar() != '\n');
printf("please wait...\n");
char* wtf = (char*) malloc(size * sizeof(char));
for (int i = 0; i < size; i++) {
wtf[i] = 255;
}
printf("%d bytes of heap memory has been allocated. you are insane.\n", size);
printf("press any key to release this memory, or CTRL+C to exit the program.\n");
getchar();
free(wtf);
return 0;
}