C语言时间计算与显示问题咨询：分钟累加格式异常

Let's break this down with targeted hints to help you work through the problem independently:

• First, stop treating the time as a single integer (like 640). Instead, split it into separate hour and minute components. Think about using the % (modulo) operator to extract the minutes part, and / (integer division) to get the hours part from your starting time value.
• Next, add your target minutes to the extracted minutes value. Check if this total is 60 or more—since 60 minutes equal one hour, you'll need to calculate how many full hours are in that total minute count, and what's left over as the new minutes.
• Take the original hours, add the number of hours you just calculated from the overflow minutes, and that gives you your new hour value.
• Finally, combine your new hour and minute values back into that "HHMM" format you need (hint: it's a simple arithmetic operation to merge them into a single number).

A quick extra thought: if your use case might involve times rolling over into the next day (like 23:50 + 20 minutes), you could consider handling hour values greater than 24 later—but focus on the core minute-to-hour conversion first!

内容的提问来源于stack exchange，提问作者tim trichowsky