Answer Posted / bijaya

1)malloc() function does not initialize the memory which it
allocates thats why it takes the garbage value.but calloc()
function initializes the allocated memory to zero thats why
it cant take any garbage value.

2)malloc() function takes single arg.that is the variabe
which is used to indicate the memory size to be
allocated.calloc() function takes two args-i) variable which
indicates the number of memory blocks.ii)variable which
indicates the size of each blocks.

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1115

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What are multidimensional arrays?

1061

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How can you find the exact size of a data type in c?

952

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What are pointers really good for, anyway?

1013

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What should malloc(0) do? Return a null pointer or a pointer to 0 bytes?

1022

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"C" language developed by "Dennis Ritchie" at AT & T. his remarks are a) too general, too abstract b) could deal with only specific problems c) lost generality of BCPL and B restored d) no remarks

1062

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1066

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1033

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#include int main(){ int i=10; int *ptr=&i; *ptr=(int *)20; printf("%d",i); return 0; } Output: 20 can anyone explain how came the output is 20

1677

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1057

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1261

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1006

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957

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1052

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A set of N billiard balls are set on a one-dimensional table. The table is 1 meter long, set north-south with two pockets at either side. Each ball has zero width and there is no friction so it is moving with a fixed velocity of either northward or southward and bounces back in a perfect elastic collision from other balls it encounter on its way (or drop into one of the pockets). Your job is to keep track of the balls movements. Task Please write a program that gets the initial place, speed and direction of all the balls and gives the position of a specific ball after t seconds. Input The first line contains the number of scenarios. Each one of the other lines in the input contains a scenario: The first number, N, is the number of balls; followed by N pairs of numbers: the distance in centimeters from the south end of the table and the speed (positive speed meaning it moves northward); the last two numbers are the number i of the target ball you should track and the time T in seconds. Output The output is a single number for each line which is the place (distance in centimeters from the south end of the table) of the tracked ball after T seconds. Note: There is no new line character at the end of the result. Sample Input 5 1 50 1 1 1000 1 50 1 1 6 1 60 -2 1 6 2 10 1 95 -1 2 30 2 10 1 95 -1 2 60 Sample Output 100 56 48 65 70

2627

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