What will be the output of this C program?

To determine the output of the given C program, let's break down the code step by step:

#include <stdio.h>

int main() {
    int i;
    for (i = 0; i < 5; i++) {
        int i = 10; // This declares a new local variable i inside the loop
        printf("%d", i); // Prints the value of the local i
        i++; // Increments the local i, but this does not affect the loop counter
    }
    return 0;
}

Here are the key points:

• The for loop runs 5 times, with the loop counter i ranging from 0 to 4.
• Inside the loop, a new local variable i is declared and initialized to 10. This local i shadows the loop counter i.
• The printf statement prints the value of this local i, which is always 10.
• The local i is incremented, but this does not affect the loop counter.

Given this analysis, the output of the program will be:

10 10 10 10 10

This is because the local variable i inside the loop is always initialized to 10 and printed, regardless of the loop counter's value4.