/***sin(x)和cos(x)图像同时显示***/
# include < stdio.h >
# include < math.h >
int main ( void )
{
    double y;
    int x, m, n;
    for ( y = 1; y >= -1; y -= 0.1 )
    {
        m = acos( y ) * 10;
        n = asin( y ) * 10;
        for ( x = 0; x <= 63; x++ )
        {
            if ( n > 0 )
            {              
                if ( x == m || x == 63 - m || x == n || x == 31 - n )
                    printf ( "*" );
                else
                    printf ( " " ); 
            }
            else 
            {          
                if ( x == m || x == 63 - m || x == 32 - n || x == 62 + n )
                    printf ( "*" );
                else
                    printf ( " " );
            } 
        }
      printf ( "\n" );  
    }
        return 0;
}原文地址:http://blog.csdn.net/u011694809/article/details/46121055