**Without grep**
#include <stdio.h>
#include <stdlib.h>
int main(void)
{
long double a[4], b[4], loadavg;
FILE *fp;
char dump[50];
for(;;)
{
fp = fopen("/proc/stat","r");
fscanf(fp,"%*s %Lf %Lf %Lf %Lf",&a[0],&a[1],&a[2],&a[3]);
fclose(fp);
sleep(1);
fp = fopen("/proc/stat","r");
fscanf(fp,"%*s %Lf %Lf %Lf %Lf",&b[0],&b[1],&b[2],&b[3]);
fclose(fp);
loadavg = ((b[0]+b[1]+b[2]) - (a[0]+a[1]+a[2])) / ((b[0]+b[1]+b[2]+b[3]) - (a[0]+a[1]+a[2]+a[3]));
printf("The current CPU utilization is : %Lf\n",loadavg);
}
return(0);
}
我试过这个,但它没有显示正确的结果,也没有grep命令。我也找到了其他解决方案,但都显示错误答案。我也找不到Direct命令。如果有人有任何想法,那么建议我一样。