>>527
#include <stdio.h>
int main(void)
{
int i = 0, j = 0;
//double data[4][7] = {{1,2,3,4,5,6,},{35,63,25,62,73,53},
// {45,53,81,53,34,45},{56,76,34,45,67,65}};
double data[3][7] = {{35,63,25,62,73,53},
{45,53,81,53,34,45},{56,76,34,45,67,65}};
//char group[3] = {"グループA", "グループB", "グループC"};
char *group[3] = {"グループA", "グループB", "グループC"};
//double ave[3] = {0.0};
double ave[3] = {0.0,0.0,0.0};
for (i = 0; i < 3; i++) {
ave[i] = (data[i][0] + data[i][1] + data[i][2] + data[i][3] + data[i][4] + data[i][5]) / 6.0;
printf("%sの平均点 = %f\n", group[i], ave[i]);
}
printf("全体の平均点 = %f\n", (ave[0] + ave[1] + ave[2]) / 3.0);

return 0;
}