Type Conversion Between int, float, and char Using printf() in C

This program reads an integer, a float, and a character, then displays them with printf() using the appropriate format specifiers, demonstrating type conversion between int and float.

C Program

#include <stdio.h>

int main() {
    int i;
    float f;
    char c;

    printf("Enter an integer: ");
    scanf("%d", &i);

    printf("Enter a float: ");
    scanf("%f", &f);

    printf("Enter a character: ");
    scanf(" %c", &c);

    printf("\nInteger value: %d\n", i);
    printf("Float value: %.2f\n", f);
    printf("Character value: %c\n", c);

    printf("\nInteger converted to float: %.2f\n", (float) i);
    printf("Float converted to integer (truncated): %d\n", (int) f);

    return 0;
}

Explanation

• %d, %f, and %c tell printf()/scanf() how to interpret each variable’s bytes; using the wrong specifier gives garbage output.
• The leading space in " %c" skips any leftover whitespace/newline in the input buffer so the character read isn’t accidentally the Enter key from the previous input.
• (float) i explicitly (explicit conversion) converts the integer to a float for display.
• (int) f truncates the float’s decimal part when converting to an integer — it does not round.

Sample Output

Enter an integer: 7
Enter a float: 3.75
Enter a character: A

Integer value: 7
Float value: 3.75
Character value: A

Integer converted to float: 7.00
Float converted to integer (truncated): 3