>>43
// gcc --input-charset=cp932 --exec-charset=cp932
#include <stdio.h>
int main() {
  int i;
  float daikei[][3] = {
    0,2,2,
    2,4,2,
    4,6,2,
    6,8,2,
    }, menseki, goukei = 0.0;

  for(i=0; i<sizeof(daikei)/sizeof(daikei[0]); i++) {
    menseki = (daikei[i][0]*daikei[i][0] + daikei[i][1]*daikei[i][1]) * daikei[i][2] / 2.0f;
    goukei += menseki;
    printf("(%d)a=%.0f^2 b=%.0f^2 h=%.0f 面積=%.0f\n",
      i, daikei[i][0], daikei[i][1], daikei[i][2], menseki);
  }
  printf("合計面積=%.0f", goukei);
  return 0;
}