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#include "stdio.h"
#include "stdlib.h"
#include "mqueue.h"
#include "sys/stat.h"
#include "string.h"
#include "signal.h"
#include "setjmp.h"
int msg_analyze (char *);
int main (void)
{
int status = 0;
mqd_t analyze_q;
struct mq_attr attr =
{
.mq_flags = 0,
.mq_maxmsg = 10,
.mq_msgsize = 100,
};
char recd_msg[100];
/* create message queue ptr_q */
analyze_q = mq_open("/analyze_q",O_RDONLY|O_CREAT,S_IWUSR|S_IRUSR, &attr);
if (0 > analyze_q)
{
perror("mq_open");
exit(1);
}
while (1)
{
status = mq_receive(analyze_q,(void *)&recd_msg[0],100,NULL);
status = msg_analyze(recd_msg);
}
status = mq_close(analyze_q);
status = mq_unlink("/analyze_q");
return(0);
}
int msg_analyze (char *msg)
{
int status = 0;
int msg_len = 0;
int ndigit = 0;
int nlower = 0;
int nupper = 0;
int nother = 0;
int i;
status = msg_len = strlen(msg);
for (i=0;i<msg_len;i++)
{
if ('0' <= msg[i] && '9' >= msg[i])
++ndigit;
else
if ('a' <= msg[i] && 'z' >= msg[i])
++nlower;
else
if ('A' <= msg[i] && 'Z' >= msg[i])
++nupper;
else
++nother;
}
printf("\n\nThe message:\n\n\"%s\"\n\nhas %d characters,\n", msg, msg_len);
printf("of which %d are digits,\n", ndigit);
printf("%d are lowercase characters,\n", nlower);
printf("%d are uppercase characters,\n", nupper);
printf("and %d are white space or punctuation.\n", nother);
return(0);
}
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