Why does everyone say not to use scanf? What should I use instead?

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Write a program, where i have a grid with many cells, how many paths are possible from one point to other desired points.

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Explain the concept and use of type void.

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Explain how can I write functions that take a variable number of arguments?

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What are the uses of pre-processor directives?

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main() { int age; float ht; printf("Enter height and age"); scanf("%d%d",&height,&age); if((age<=20)&&(ht>=5)) {printf("She loves you");} else {printf("She loves you");} }

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What will be the result of the following C language program? main() { int a = 0; int b = 20; char x = 1; char y = 10; if(a,b,x,y) printf("Welcome"); }

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What is the purpose of 'register' keyword?

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This is a variation of the call_me function in the previous question:call_me (myvar)int *myvar;{ *myvar += 5; }The correct way to call this function from main() will be a) call_me(myvar) b) call_me(*myvar) c) call_me(&myvar) d) expanded memory

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write a string copy function routine?

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What is the difference between c and python?

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What is a null pointer assignment error? What are bus errors, memory faults, and core dumps?

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