#include <stdio.h>
int sum;
void caluculate(int (*a)[4]);
int main(void){
int a[3][4]={{1,2,3,4},{5,6,7,8},{9,10,11,12}};
caluculate(a);
return 0;
}
void caluculate(int(*a)[4]){
for(int i=0;i<3;i++){
for(int j=0;j<4;j++){
sum+=*(a[i]+j);
}
}
}
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