For Loop In C Programming Language

Today lets learn about another loop control statement i.e., for loop. For loop is used to repeatedly execute certain set of instructions.

For loop allows us to specify 3 things in a single line:
1. Loop count initialization.
2. Condition Checking.
3. Modification Statement(increment/decrement statements).

Related Read
while loop in C programming
Relational Operators In C
Logical Operators In C
Video Tutorial: For Loop In C Programming Language

Source Code: For Loop In C Programming Language

#include<stdio.h>
int main()
{
    int i;

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

    return 0;
}

Output:
0 IBM
1 IBM
2 IBM
3 IBM
4 IBM
5 IBM
6 IBM
7 IBM
8 IBM
9 IBM

#include<stdio.h>
int main()
{
    int i;

    for(i = 0; i < 10; i++)
    {
        printf("%d IBM\n", i + 1);
    }

    return 0;
}

Output:
1 IBM
2 IBM
3 IBM
4 IBM
5 IBM
6 IBM
7 IBM
8 IBM
9 IBM
10 IBM

i = 1 and i<= 10

#include<stdio.h>

int main()
{
    int i;

    for(i = 1; i <= 10; i++)
    {
        printf("%d IBM\n", i);
    }

    return 0;
}

Output:
1 IBM
2 IBM
3 IBM
4 IBM
5 IBM
6 IBM
7 IBM
8 IBM
9 IBM
10 IBM

No initialization statement and No Modification Statement

#include<stdio.h>
int main()
{
    int i = 0;

    for(; i < 10;)
    {
        printf("%d IBM\n", i + 1);
        i = i + 1;
    }

    return 0;
}

Output:
1 IBM
2 IBM
3 IBM
4 IBM
5 IBM
6 IBM
7 IBM
8 IBM
9 IBM
10 IBM

No Curly braces and No initialization statement

#include<stdio.h>

int main()
{
    int i = 0;

    for(; (i < 10); i = i + 1)
        printf("%d IBM\n", i + 1);

    return 0;
}

Output:
1 IBM
2 IBM
3 IBM
4 IBM
5 IBM
6 IBM
7 IBM
8 IBM
9 IBM
10 IBM

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