问如果我们将一个新值赋值给一个变量，那么旧值会发生什么呢？( C)

EN

// Basic conversions in C

#include <stdio.h>

int main (void)
{
    float  f1 = 123.125, f2;
    int    i1, i2 = -150;
    char   c = 'a';

    i1 = f1;                 // floating to integer conversion
    printf("%f assigned to an int produces %i\n", f1, i1);

    f1 = i2;                 // integer to floating conversion
    printf("%i assigned to a float produces %f\n", i2, f1);

    f1 = i2 / 100;           // integer divided by integer
    printf("%i divided by 100 produces %f\n", i2, f1);

    f2 = i2 / 100.0;           // integer divided by a float
    printf("%i divided by 100.0 produces %f\n", i2, f2);

    f2 = (float) i2 / 100;     // type cast operator
    printf("(float) %i divided by 100 produces %f\n", i2, f2);
    return 0;
}