c语言 5-11
1、
#include <stdio.h>
int main(void)
{
int i, j, a[6][2], b[2] = {0}, c[6] = {0};
puts("please input the elements of array a.");
for(i = 0; i < 6; i++)
{
for(j = 0; j < 2; j++)
{
printf("a[%d][%d] = ", i, j); scanf("%d", &a[i][j]);
}
}
puts("\nshow the matrix form of array a.");
for(i = 0; i < 6; i++)
{
for(j = 0; j < 2; j++)
{
printf("%4d", a[i][j]);
}
putchar('\n');
}
putchar('\n');
for(i = 0; i < 2; i++)
{
for(j = 0; j < 6; j++)
{
b[i] += a[j][i];
}
printf("sum majorNO.%d: %d, mean: %.2f\n", i + 1, b[i], (double)b[i] / 6);
}
putchar('\n');
for(i = 0; i < 6; i++)
{
for(j = 0; j < 2; j++)
{
c[i] += a[i][j];
}
printf("sum student.NO.%d: %d, mean: %.2f\n", i + 1, c[i], (double)c[i] / 2);
}
return 0;
}