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liweinan/pass_by_value.c

Created April 16, 2018 14:33
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x在foo内部的修改，外面看不见的，因为foo里面的x是在foo的stack上的复制品。
Raw
pass_by_value.c
void foo(int x) {
x = 2;
}
int main() {
int x = 1;
foo(x);
printf("x: %d\n", x);
}
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