kfries@kfries-laptop:tmp$ cat ex2.c
#include <stdio.h>
#include <stdlib.h>
int main (int argc, char **argv) {
int argcount = 1;
int mode;
while (argcount < argc) {
if (strcmp(argv[argcount], "-mode1") == 0) {
argcount++;
printf("Mode 1 Parameter = %s\n", argv[argcount++]);
mode = 1;
} else if (strcmp(argv[argcount], "-mode2") == 0) {
argcount++;
printf("Mode 2 Parameter = %s\n", argv[argcount++]);
mode = 2;
} else {
printf("Unknown command %s\n", argv[argcount]);
exit(1);
}
}
printf("End of program in mode %d\n", mode);
}
kfries@kfries-laptop:tmp$ gcc -o ex2 ex2.c
kfries@kfries-laptop:tmp$ ./ex2 -mode1 hello
Mode 1 Parameter = hello
End of program in mode 1
kfries@kfries-laptop:tmp$ ./ex2 -mode2 world
Mode 2 Parameter = world
End of program in mode 2
kfries@kfries-laptop:tmp$ ./ex2 -mode3 foobar
Unknown command -mode3
kfries@kfries-laptop:tmp$
Kevin Fries
On Mon, 2011-12-19 at 15:48 -0700, Michael Havens wrote:
> #include <stdio.h>
> int main (int argc, char * argv[])
> {
> int argcount=1; /* argv 1 is the first parameter */
> int mode;
> while(argcount < argc )
> {
> if(strcmp(argv[argcount],"-mode1") == 0)
> {
> argcount++;
> printf("mode 1 parameter = %s\n",argv[argcount ++]);
> mode =1;
> }
> else if (strcmp(argv[argcount],"-mode2") == 0)
> {
> argcount++;
> printf("mode 2 parameter = %s\n",argv[argcount ++]);
> mode =2;
> }
> else if(strcmp(argv[argcount],"-help") == 0)
> {
> argcount++;
> printf("Help mode\n");
> }
> else
> {
> printf("unknown command %s\n",argv[argcount]);
> exit(1);
> }
> }
> printf("end of program in mode %d\n",mode);
> }
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