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--- c:stdlib.h:srand [2013/01/22 22:02]
+++ c:stdlib.h:srand [2024/02/16 01:04] (current)
@@ Line 1: / Line 1: @@
+{{keywords>wiki library source code example reference}}
+===== srand =====
+<code c>
+    #include <stdlib.h>
+    void srand(unsigned int seed);
+</code>
+===== Description =====
+srand is used to initialize the random number generator.\\
+The use of date / time to initialize the generator \\
+means that the generated sequence of numbers "random" is.\\
+    <time.h> is for this example nessesary
+===== srand C Sourcecode Example =====
+<code c>
+/*
+ * srand exmple code
+ * http://code-reference.com/c/stdlib.h/srand
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h> /* for time to initialize srand */
+int main ( void )
+{
+  int i;
+  /* initialize random generator */
+  srand ( (unsigned int) time(NULL) ); /* comment it out to see what happend */
+  /* random number */
+  for(i=0; i<=5; i++){
+      printf("example %i, for srand = %d\n",i, rand());
+  }
+  return 0;
+}
+</code>
+==== output of srand example ====
+    user@host:~/code-reference.com#  ./srand
+    example 0, for srand = 796883283
+    example 1, for srand = 1140159597
+    example 2, for srand = 137384045
+    example 3, for srand = 1204700693
+    example 4, for srand = 763425562
+    example 5, for srand = 472690191

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