#include<stdio.h>

void main( void )
{
float k[5] = {92, 56, 89, 76, 81};
float s[5] = {82, 46, 79, 88, 91};

printf("kokugo : %f\n"
"suugaku: %f\n"
"Heikin : %f %f %f %f %f\n",
( k[0] + k[1] + k[2] + k[3] + k[4] )/5,
( s[0] + s[1] + s[2] + s[3] + s[4] )/5,
( k[0] + s[0] ) / 2,
( k[1] + s[1] ) / 2,
( k[2] + s[2] ) / 2,
( k[3] + s[3] ) / 2,
( k[4] + s[4] ) / 2);
}


これでどうだ！