c语言编写一个程序:1-3+5-7……-99+101

#includevoid main(){ int i=1; int k=-1; int sum=0; for(i=1;i<=101;i+=2){ k*=-1; sum+=i*k; } printf("\nThis is 1-3+5-7+..-99+101: %d\n",sum);}//已经测试通过，望采纳