1 #include <assert.h> 2 #include <stdio.h> 3 main()4 int main() { 5 FILE* file = fopen("/sandbox/input.txt", "r"); 6 assert(file != NULL); 7 8 char c = fgetc(file); 9 while (c != EOF) { 10 int wrote = fputc(c, stdout); 11 assert(wrote != EOF); 12 c = fgetc(file); 13 } 14 } 15