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#include <stdio.h> #include <stdatomic.h> atomic_int acnt = 0; atomic_int bcnt = 0; int foo() { for(int n = 0; n < 1000; ++n) { ++acnt; if(acnt % 10 == 0) ++bcnt; } return acnt; } int main(void) { int acnt = foo(); printf("First atomic counter is %u, second is %u\n", acnt, bcnt); return 0; }