Syntax of a for loop in C?

In C, the for loop is used to repeat a block of instructions several times. It has three parameters:

• an initialization which is usually used to assign a value to a variable;
• a condition which is a test that will determine when the loop should stop;
• an iteration which is an operation that specifies the step of the loop.

Syntax:

for (initialization ; test ; iteration)
{
	// Repeated code
}

Flowchart:

Example :

for (i=0 ; i<10 ; i++)
{
	printf ("%d\n", i);
}

Try online on repl.it.

The parameters of the loop are optional. The following code is an infinite loop, equivalent to while(1); :

for (;;);

See also:

• How to write a loop in C?

In C, the for loop is used to repeat a block of instructions several times. It has three parameters:

• an initialization which is usually used to assign a value to a variable;
• a condition which is a test that will determine when the loop should stop;
• an iteration which is an operation that specifies the step of the loop.

Syntax:

for (initialization ; test ; iteration)
{
	// Repeated code
}

Flowchart:

Example :

for (i=0 ; i<10 ; i++)
{
	printf ("%d\n", i);
}

Try online on repl.it.

The parameters of the loop are optional. The following code is an infinite loop, equivalent to while(1); :

for (;;);

See also:

• Comment écrire une boucle en C ?