C Exercises: Evaluate the equation y=xn when n is a non-negative integer

Last update on May 27 2022 12:13:37 (UTC/GMT +8 hours)

C Basic Declarations and Expressions: Exercise-67 with Solution

Write a C program to evaluate the equation y=xn when n is a non-negative integer.

Sample Solution:

C Code:

#include <stdio.h>
int main(){
int count, n;
float x,y;
printf("Input the values of x and n:\n");
scanf("%f%d", &x,&n);
y=1.0;
count=1;
while(count<=n)
{
y=y*x;
count++;
}
printf("x=%f; n=%d; \nx to power n=%f", x, n,y);
return 0;
}

Sample Output:

Input the values of x and n: 256
x=256.000000; n=0; 
x to power n=1.000000

Flowchart:

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