1.韩信点兵
相传韩信才智过人，从不直接清点自己军队的人数，只要让士兵先后以三人一排、五人 一排、七人一排地变换队形，而他每次只掠一眼队伍的排尾就知道总人数了
#include<stdio.h>
int main()
{
int a,b,c,n;
scanf("%d%d%d",&a,&b,&c);
n = (a*70+b*21+c*15)%105;
if(n >= 10 && n <= 100)
printf("%d\n",n);
else
printf("No answer\n");
return 0;
}
#include<stdio.h>
int main()
{
int a,b,c,n;
scanf("%d%d%d",&a,&b,&c);
n = (a*70+b*21+c*15)%105;
if(n >= 10 && n <= 100)
printf("%d\n",n);
else
printf("No answer\n");
return 0;
}
2.正余弦
#include <stdio.h>
#include <math.h>
#define PI 3.1415926
int main()
{
int n;
double x;
scanf("%d",&n);
x=n*(PI/180.0);
printf("sin(%d)=%lf",n,sin(x));
printf("cos(%d)=%lf",n,cos(x));
return 0;
}
#include <math.h>
#define PI 3.1415926
int main()
{
int n;
double x;
scanf("%d",&n);
x=n*(PI/180.0);
printf("sin(%d)=%lf",n,sin(x));
printf("cos(%d)=%lf",n,cos(x));
return 0;
}
