C Academy · Lesson

Conversion Pitfalls

Overflow and truncation.

Conversions Can Bite

Silent conversions are convenient but can cause overflow, truncation, and sign surprises. This lesson covers the traps.

#include <stdio.h>
int main(void) {
    printf("Beware silent conversions\n");
    return 0;
}

Assigning a value too large for the target integer type wraps around or loses data.

#include <stdio.h>
#include <limits.h>
int main(void) {
    int max = INT_MAX;
    printf("INT_MAX = %d\n", max);
    return 0;
}