获取cpu一些信息的例子

不积跬步无以至千里。

慢慢积累啊

 

#include <stdio.h>#include <stdlib.h>#include <string.h>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); }}

可以提取信息。

 

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