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• how to generate primary key values while inserting data into table through pl/sql stored procedure

  - by thulasi policherla

  hi friends, I am trying to insert data into particular table through pl/sql stored procedure,my requirement is while inserting i should generate PRIMARY KEY values for particular column and also i should return that PRIMARY KEY value to output and one more thing is that for another column i should validate my string such that it should contain only characters not integers. please help me in writing code for the above requirement Thanks and regards thulasi policherla

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• function calling with pre decrement condition in if

  - by thulasi

  void display(int a) { printf("\n%d",a); if(--a) display(a); printf("\n%d",a); } main() { display(4); } Please explain the above program. i can't understand.what is the output.ya sir i got oupt like this 4 3 2 1 0 1 2 3 how is it sir

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• What is the difference b/n pre-increment and functional argument is pre-increment

  - by thulasi

  main() { int a=1; void xyz(int,int); xyz(++a,a++); printf("%d",a); } void xyz(int x,int y) { printf("\n%d %d",x,y); }

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• how to implement the string handling functions. is it necesary to imclude any libraries. give exampl

  - by thulasi

  main() { char a,b a='A'; b='B'; strcat(b,a); prontf("a:%s b:%s",a,b); }

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