c语言为什么输出总是出错？

Question

#include
#include
#define INF 1000000000
int main() {
freopen("in.txt", "r", stdin);
freopen("out.txt", "w", stdout);
int x = 0; int count = 0; int a, b, c;
while (scanf("%d", &x) == 1) {
if (count == 0) {
a = x;
printf("%d ", &a);
}
if (count == 1) {
b = x;
printf("%d ", &a);
}
if (count == 2) {
c = x;
printf("%d ", &c);
}
count++;
}
printf("%d %d %d", &a, &b, &c);
fclose(stdin);
fclose(stdout);

}

如上 输出为7927668 7927668 7927668 （in.txt中为 1 2 6）

但是 如下却可一成功输出 1 2 6
#include
#include
#define INF 1000000000
int main() {
freopen("in.txt", "r", stdin);
freopen("out.txt", "w", stdout);
int x = 0; int count = 0; int a, b, c;
while (scanf("%d", &x) == 1) {
if (count == 0) {
a = x;
}
if (count == 1) {
b = x;
}
if (count == 2) {
c = x;
}
count++;
printf("%d", x);

}

fclose(stdin);
fclose(stdout);

}

Answer 1

具体的错误内容是什么