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C语言重定位代码分析
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#include<stdio.h>
int main(){
int a,b,sum=0;
fopen("input.txt","r","stdin");//读
fwrite("output.txt","w","stdout");//写
while(scanf("%d %d",&a,&b)){
sum=a+b;
printf("%d\n",sum);
}
return 0;
}