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C Exercises: Calculate for each pair of integers x, y and z

C Basic Declarations and Expressions: Exercise-89 with Solution

Write a C program to calculate (x + y + z) for each pair of integers x, y and z where -2^31 <= x, y, z<= 2^31-1 .

Sample Solution:

C Code:

#include <stdio.h>

int main()
{
long x,y,z;
printf("Input x,y,x:\n");
scanf("%lld %lld %lld",&x,&y,&z);
printf("Result: %lld\n",x+y+z);
return 0;
}

Sample Output:

Input x,y,x:
Result: 140733606875472

Flowchart:

C Programming Flowchart: calculate (x + y + z) for each pair of integers x, y and z.

C programming Code Editor:

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C Programming: Tips of the Day

Static variable inside of a function in C

The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo().

The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.

The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over all future calls to foo().

Ref : https://bit.ly/3fOq7XP