Why should I use standard library functions instead of writing my own?

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If a five digit number is input through the keyboard, write a program to print a new number by adding one to each of its digits.For example if the number that is input is 12391 then the output should be displayed as 23402

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main() { int x=10,y=15; x=x++; y=++y; printf("%d %d\n",x,y); } output??

19 Answers   EBS, Ramco, Sangwin, TCS,

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What are actual arguments?

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list the no of files created when c source file is compiled

9 Answers   TCS,

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Explain the difference between struct and union.

2 Answers  

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You are to write your own versions of strcpy() and strlen (). Call them mystrcpy() and mystrlen(). Write them first as code within main(), not as functions, then, convert them to functions. You will pass two arrays to the function in the case of mystrcpy(), the source and target array.

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An organised method of depicting the use of an area of computer memory used to signify the uses for different parts of the memory a) swap b) extended memory c) memory map d) all of the above

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Explain what is the advantage of a random access file?

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main() { FILE *fs; char c[10]; fs = fopen(“source.txt”, ”r”); /* source.txt exists and contains “Vector Institute” */ fseek(fs,0,SEEK_END); fseek(fs,-3L,SEEK_CUR); fgets(c,5,fs); puts(c); }

1 Answers   Vector,

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What is variable initialization and why is it important?

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what is bit rate & baud rate? plz give wave forms

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