#include
#include
#include
char* cpu(void)
{
unsigned int total;
float user;
float nice;
float system;
float idle;
char cpu[21];
char text[201];
FILE *fp;
fp = fopen("/proc/stat", "r");
while (fgets(text, 200, fp))
{
if (strstr(text, "cpu"))
{
sscanf(text, "%s %f %f %f %f", cpu, &user, &nice, &system, &idle);
}
}
fclose(fp);
total = (user + nice + system + idle);
user = (user / total) * 100;
nice = (nice / total) * 100;
system = (system / total) * 100;
idle = (idle / total) * 100;
snprintf(cpu, 21, "%4.2f %4.2f %3.2f %4.2f", user, nice, system, idle);
printf("cpu detail is:\n%s\n",cpu);
return(cpu);
}
int main(int argc,char **argv)
{
//char cpu_detail[200];
while(1)
{
cpu();
sleep(2);
}
}
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