View Code of Problem 51

#include <stdio.h>
#include <stdlib.h>
int main()
{
    int sum=0;
	int i,j,n,a[10][10];
    scanf("%d",&n);
    for(i=0;i<n;i++)
    for(j=0;j<n;j++)
    scanf("%d",&a[i][j]);
    for(i=0;i<n;i++)
    for(j=0;j<=i;j++)
    sum+=a[i][j];
    printf("%d\n",sum);
	system("pause");
	return 0;
}

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