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+{{keywords>wiki library source code example reference}}
+====== abs ======
+<code c>
+    #include <stdlib.h>
+    int abs(int i);
+</code>
+computes the absolute value of the integer i
+===== C Sourcecode Example =====
+<code c>
+#include <stdio.h> /* including standard library */
+//#include <windows.h> /* uncomment this for Windows */
+ /* for printf */
+#include <stdlib.h>
+int main( void )
+{
+  int i = -42;
+  printf("abs from i = %d\n", abs(i));
+  return 0;
+}
+</code>
+==== output with abort: ====
+    user@host:~/code-reference.com# ./abs
+    abs from i = 42

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