hi lets assume i want to get input from a user:
the user enters some text like "abc".Code:....... char buffer[256]; gets(buffer); .......
is there a function that would randomize that string?
e.g. out of "abc": "cba", "cab", "bca", "acb".
thanks in advance threadhead
Here's a site about shuffling a deck of cards. The theory is also applicable to shuffling characters in a string.
http://c2.com/cgi/wiki?LinearShuffle
thanks for your reply but i just dont get main idea of
this randomizing thing.
can you maybe give me an example?
cu
i thought of a random algorythm.
heres my result:
but when i enter i.e. "123" i get alot of strange symbols, but the result should be containing onlyCode:#include<stdio.h> #include<stdlib.h> #include<time.h> int main () { int i; char input[20]; srand(time(NULL)); scanf("%s", input); for(i=0;i<20;i++) input[i] = input[rand () % 20]; printf("%s", input); return 0; }
the entered chars.
anyone?
thanks
with this code i swap the first with the second letter
of the buffer.
but the more characters the buffer has the more complicatedCode:#include <stdio.h> #include <stdlib.h> //#include <time.h> int main () { // char remember[1024]; char buffer[] = "ha"; char tmp[1024]; int i; int le; // srand(time(NULL); le = (strlen(buffer)); tmp[le-1] = buffer[le-2]; tmp[le-2] = buffer[le-1]; strncpy(buffer, tmp, strlen(buffer)); printf("%s\n", buffer); return 0; }
it would get to copy the single chars.
is it possible to manage this with a loop?
if yes so please give me an example, im stuck
thank you
I was thinking that this was easy but .... ive changed my mind
heres what i got so far (after 5 mins) the only prob is that some letters arent there anylonger... u'l c
then u get as output something likeCode:#include <stdio.h> #include <time.h> #include <stdlib.h> #include <string.h> int main(){ char woord[5]="HALLO",letter; int lengte,i,ct; time_t t; lengte=strlen(woord); srand((unsigned) time(&t)); printf("%s\n",woord); for(i=0;i<lengte;i++){ ct=rand()%lengte; letter=woord[ct]; printf("%c",letter); } return 0; }
LAALH or OHHLO
so this way not all letters are being used in the mixed strings....
(and right now im going to sleep so ull have to figure the rest out urself ..)
::::edit::::
again sry bout the indentations but it seems that if i ctrl-c ctrl-v the whole thing it gets messed up
Originally Posted by Salem
You need a swap function (or at least a working section of code to swap 2 variables)
Now, adapt this code to fit your needsCode:#include <stdio.h> void swap(char *a, char *b); int main(void) { char name[] = "Hammer"; puts(name); swap(&name[1], &name[4]); puts(name); return(0); } void swap(char *a, char *b) { char c; c = *a; *a = *b; *b = c; }
When all else fails, read the instructions.
If you're posting code, use code tags: [code] /* insert code here */ [/code]
another questions was popping up in mind when i
was adding your code to mine.
lets assume a user enter a text like "abc".
now i want to implement a code that tries out
every possible combination with that string.
like : "abc", "acb", "bac", "bca", "cba", cab"
how would i do that?
thanks
IIRC, Prelude wrote some code that'll do that, and again, IIRC, it's somewhere on the C++ board. Happy hunting
When all else fails, read the instructions.
If you're posting code, use code tags: [code] /* insert code here */ [/code]
great
