Answer Posted / j j ramesh

there is no foreigh key in c

Give a one-line C expression to test whether a number is a power of 2. [No loops allowed - it's a simple test.]

1101

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main() { struct s1 { char *str; struct s1 *ptr; }; static struct s1 arr[] = { {"Hyderabad",arr+1}, {"Bangalore",arr+2}, {"Delhi",arr} }; struct s1 *p[3]; int i; < BR> for(i=0;i<=2;i++) p[i] = arr[i].ptr; printf("%s ",(*p)->str); printf("%s ",(++*p)->str); printf("%s ",((*p)++)->str); }

1453

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What is the difference between struct and typedef struct in c?

1137

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What is the use of extern in c?

1103

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Why can’t we compare structures?

1288

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What are inbuilt functions in c?

1042

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Explain what are run-time errors?

1102

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What is the difference between malloc calloc and realloc in c?

1158

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Is file a keyword in c?

941

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A routine usually part of the operation system that loads a program into memory prior to execution a) linker b) loader c) preprocessor d) compiler

1109

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Is anything faster than c?

1024

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C program execution always begins with a) #include b) comment (/*-------*/) c) main() d) declaration instructions

1071

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What do you mean by a sequential access file?

1093

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What are two dimensional arrays alternatively called as?

1199

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Explain 'bit masking'?

1098

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