Submission #829286

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Source Code Expand

#include <cstdio>
#include <sstream>
#include <string>

using namespace std;

string int2string(int n)
{
    stringstream ss;
    string ret;
    int len;
    
    ss << n;
    
    ret = ss.str();
    len = ret.size();
    
    if (len == 1) {
        ret = "0" + ret;
    }
    
    return ret;
}

int main() {
	int N;
	int startH, startM, endH, endM;
	bool LOOKATTABLE[25][12];
	
	int i, j, len, offset;
	
	for (i = 0; i < 25; i++) for (j = 0; j < 12; j++) LOOKATTABLE[i][j] = false;
	
	scanf("%d", &N);
	
	while (N--) {
	    scanf("%02d%02d-%02d%02d", &startH, &startM, &endH, &endM);
	    
	    startM = startM / 5;
	    endM = (endM + 4) / 5;
	    
	    if (endM == 12) {
	        endM = 0;
	        endH++;
	    }
	    
	    for (i = startH; i <= endH; i++) {
	       len = i == endH ? endM : 12;
	       offset = i == startH ? startM : 0;
	        
	        for (j = offset; j < len; j++) {
	            LOOKATTABLE[i][j] = true;
	        }
	    }
	}
	
	bool isEnd = false;
	bool b;
	string ans;
	int hour, min;

	for (i = 0; i < 25; i++) {
	    for (j = 0; j < 12; j++) {
	        b = LOOKATTABLE[i][j];
	        hour = i;
	        min = j * 5;
	        ans = int2string(hour) + int2string(min);
	        
	        if (b && !isEnd) {
                printf("%s-", ans.c_str());
                
                isEnd = true;
	        } else if (!b && isEnd) {
	            printf("%s\n", ans.c_str());
	            
	            isEnd = false;
	        }
	    }
	}
	
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:34:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
                 ^
./Main.cpp:37:64: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
      scanf("%02d%02d-%02d%02d", &startH, &startM, &endH, &endM);
                                                                ^

Judge Result