sscanf

functions

SYNTAX

num = sscanf("string", "format", args)

DESCRIPTION

A subset of the c stdio sscanf function. The formats understood are %s, %[...], %c, %lf, %f, %d, %i, %o, %x, along with numbers and the * character. Explicit strings in the format are also understood. A great deal of error checking is done to make sure the args match the format string. The function returns the actual number of args that are assigned values.

EXAMPLES

execute following example

strdef s
double x[20]
y=0

sscanf("this is a test\n", "%s", s)
print s

sscanf("this is a test\n", "%[^\n]", s)
print s

sscanf("this is a test\n", "%*s%s", s)
print s

sscanf("this is a test\n", "%2s", s)
print s

sscanf("this is a test\n", "%10s", s)
print s

sscanf("this is a test\n", "%*3s%s", s)
print s

sscanf("this is a test\n", "%*s%s", s)
sscanf("0xff 010 25", "%i%i%i", &x[0], &x[1], &x[2])
print x[0], x[1], x[2]

double x[20]
sscanf("ff 10 25", "%x%o%d", &x[0], &x[1], &x[2])
print x[0], x[1], x[2]

sscanf("50.75", "%d.%d", &x[0], &x[1])
print x[0], x[1]

sscanf("30.987654321", "%f", &y)
printf("%20.15g\n", y)

sscanf("30.987654321", "%lf", &y)
printf("%20.15g\n", y)

sscanf("A", "%c", &y)
printf("%c\n", y)

sscanf("1 2 3 4 5 6 7 8 9 10", "%f%f%f%f%f%f%f%f%f%f%f", &x[0], &x[1], &x[2],\
	&x[3], &x[4], &x[5], &x[6], &x[7], &x[8], &x[9], &x[10], &x[11], &x[12])
print "should only read ten of the following"
for i=0,12 print i, x[i]

print "error tests"

execute1("sscanf(\"string\", \"%\", s)")
execute1("sscanf(\"string\", \"%*\", s)")
execute1("sscanf(\"string\", \"%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c\", &x,&x,&x,&x,&x,&x,&x,&x,&x,&x,&x,&x,&x,&x,&x,&x,&x,&x,&x,&x,&x)")
execute1("sscanf(\"string\", \"%*5\", s)")

execute1("sscanf(\"string\", \"%l[st]\", s)")
execute1("sscanf(\"string\", \"%[\", s)")
execute1("sscanf(\"string\", \"%[]\", s)")
execute1("sscanf(\"string\", \"%[^]\", s)")
execute1("sscanf(\"string\", \"%ls\", s)")
execute1("sscanf(\"string\", \"%lc\", &y)")
execute1("sscanf(\"string\", \"%5c\", &y)")
execute1("sscanf(\"string\", \"%q\", &y)")

execute1("sscanf(\"string\", \"%s\")")

execute1("sscanf(\"string\", \"%s\", &y)")
execute1("sscanf(\"25\", \"%d\", s)")


execute1("sscanf(\"string\", \"%c%c%c%c%c%c%c%c%c%c%c%c%c\", &x,&x,&x,&x,&x,&x,&x,&x,&x,&x,&x,&x,&x)")

neuron/general/function/sscanf.hel : 2314 Jul 19