摘要:
osinfo.sh bash !/bin/bash echo e " System Information " echo e "Hostname:\t\t" echo e "uptime:\t\t" echo e "Manufacturer:\t" echo e "Product Name:\t" 阅读全文
摘要:
利用向量公式: AB·AC=|AB|·|AC|·cos(theta) c include include int main() { //90,45,45 //double Ax(0),Ay(0),Bx(1),By(0),Cx(0),Cy(1); //60,60,60 //double Ax(0),A 阅读全文