墨墨萧萧

摘要： //计算圆的面积#includeint main(void){ double R,S; printf("Enter R:"); scanf("%Lf",&R); if(R>0){ S=3.14*R*R; } else{ printf("It is wrong");} printf("S=%.2f\n",S); return 0;} #includeint main(){ int c1,c2,c3,c4; scanf("%d%d",&c1,&c2); printf(& 阅读全文