代码如下:
#include <stdio.h>
#define N 10
int main()
{
int matrix[N][N], i, j, sum = 0;
for (i = 0; i < N; i++) {
for (j = 0; j < N; j++) {
scanf("%d", &matrix[i][j]);
}
}
for (i = 0; i < N; i++) {
sum += matrix[i][i];
}
printf("sum = %d\n", sum);
return 0;
}
运行结果:
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/241f95cad1c8a786e70100ac6a09c93d70cf506c?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)