Question

4. Write a C definition (prototype) for a function called power which takes a float and an integer as inputs, and returns a float as a result.

5. Write the body of the function from (4). This function should raise the first argument to the power of the second, by multiplying it by itself that many times (don’t use the inbuilt pow function, write your own). Do not worry about “special” cases like negative powers.

Please do Q.5

Answer 1

Answer:

#include <stdio.h>
float power(float num,int powers) //called function
{
float result=1.0; //declaring and initialising variables
for(int i=0;i<powers;i++) //loop to run power times
{
result=result*num; //multiplying the number for power times
}
return result; //returning output
}
int main()   
{
float num; //declaring variables
int powers;
printf("Enter a number >>>"); //taking user input
scanf("%f",&num);
printf("Enter power >>>"); //taking user input
scanf("%d",&powers);
float result =power(num,powers); //calling function
printf("The result is %f",result); //printing output
}

1 //called function 4 //declaring and initialising variables // Loop to run power times { //multiplying the number for power times 8 9 //returning output #include <stdio.h> 2 float power(float num, int powers) 3-{ float result=1.0; 5 for(int i=0;i<powers;i++) 6 7 result=result num; } return result; 10 } 11 int main() 12 - { 13 float num; 14 int powers; 15 printf("Enter a number >>>"); 16 scanf("%f",&num); 17 printf("Enter power >>>"); 18 scanf("%d",&powers); 19 float result =power(num, powers); 20 printf("The result is %f",result); 21 } //declaring variables //taking user input //taking user input //calling function //printing output

output:

Enter a number >>>3.5 Enter power >>>4 The result is 150.062500