Q:

Golang for Loop | Find Output Programs | Set 2

robaa
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2022-11-14
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This section contains the for loop find output programs (set 2) with their output and explanations.

Program 1:

package main

import "fmt"

func main() {
	for {
		fmt.Println("Hello World")
	}
}

Program 2:

package main

import "fmt"

func main() {
	for cnt := 0; ; cnt++ {
		fmt.Println("Hello World")
	}
}

Program 3:

package main

import "fmt"

func main() {
	for true {
		fmt.println("Hello World")
	}
}

 

Program 4:

package main

import "fmt"

func main() {
	var num int = 5
	var fact int = 1

	for cnt := 2; cnt <= num; cnt = cnt + 1 {
		fact = fact * cnt
	}

	fmt.Println("Factorial is: ", fact)
}

Program 5:

package main  

import "fmt"  

func main() {
    var num int = 0;

    for (num,_=fmt.Println("Hello World")) {  
        fmt.Println("Hello World");
    }
}
Go programming,
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All Answers

robaa
2022-11-14
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Answer Program 1:

Output:

Hello World
Hello World
Hello World
Hello World
Hello World
Hello World
...
...
...
Prints "Hello World" infinite times.

Explanation:

The above program will print "Hello World" infinite times, because if we used the for loop with only curly braces then it becomes an infinite loop.

 

Answer Program 2:

Output:

Hello World
Hello World
Hello World
Hello World
Hello World
Hello World
...
...
...
Prints "Hello World" infinite times.

Explanation:

The above program will print "Hello World" infinite times, because if we did not specify any condition in the for loop then it is true by default.

 

Answer Program 3:

Output:

./prog.go:7:3: cannot refer to unexported name fmt.println

Explanation:

The above program will generate a syntax error, because we used fmt.println() function instead of fmt.Println().

 

Answer Program 4:

Output:

Factorial is:  120

Explanation:

In the above program, we created two integer variables num, fact initialized with 5,1 respectively. Then we calculated the factorial of num and printed the result on the console screen.

 

Answer Program 5:

Output:

./prog.go:8:13: syntax error: unexpected comma, expecting )

Explanation:

 

The above program will generate a syntax error. As we know that, fmt.Println() function returns two values but the for loop except on one condition result.

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