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Give a fast way to multiply a number by 7

Answers were Sorted based on User's Feedback



Give a fast way to multiply a number by 7..

Answer / shivangi

Hi Tejonath
What is your logic in your answere.Its absolutely correct.
I'm asking is there any generic way to do this?could you
please reply here or answere me to
verma_shivangi@yahoo.co.in

Is This Answer Correct ?    4 Yes 9 No

Give a fast way to multiply a number by 7..

Answer / siva

Hi Tejonath
What is your logic in your answere.Its absolutely correct.
I'm asking is there any generic way to do this?could you
please reply here or answere me to gvsivannarayana@yahoo.com

Thanks&Regards
siva..

Is This Answer Correct ?    4 Yes 11 No

Give a fast way to multiply a number by 7..

Answer / anveshbanti

void main()
{
int a=i;
printf(enter i value");
scanf("%d",&i)
int res=i*7;
printf("result is " res);
}

Is This Answer Correct ?    2 Yes 19 No

Give a fast way to multiply a number by 7..

Answer / mani

n=n*7;

Is This Answer Correct ?    9 Yes 47 No

Give a fast way to multiply a number by 7..

Answer / atul sharma

(x<<2)-1

Is This Answer Correct ?    15 Yes 89 No

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A banker has a seif with a cipher. Not to forget the cipher, he wants to write it coded as following: each digit to be replaced with the difference of 9 with the current digit. The banker chose a cipher. Decipher it knowing the cipher starts with a digit different than 9. I need to write a program that takes the cipher from the keyboard and prints the new cipher. I thought of the following: Take the input from the keyboard and put it into a string or an array. Go through the object with a for and for each digit other than the first, substract it from 9 and add it to another variable. Print the new variable. Theoretically I thought of it but I don't know much C. Could you give me any kind of hint, whether I am on the right track or not?

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