Borderou de evaluare (job #776551)

Compilare: main.cpp: In function 'int main()': main.cpp:6:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result] 6 | for(freopen("alfanumeric.in","r",stdin),freopen("alfanumeric.out","w",stdout),scanf("%d\n",&j);fgets(s,50000,stdin);t[j++]=0,printf("%s",t)) | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:6:52: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result] 6 | for(freopen("alfanumeric.in","r",stdin),freopen("alfanumeric.out","w",stdout),scanf("%d\n",&j);fgets(s,50000,stdin);t[j++]=0,printf("%s",t)) | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:6:88: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result] 6 | for(freopen("alfanumeric.in","r",stdin),freopen("alfanumeric.out","w",stdout),scanf("%d\n",&j);fgets(s,50000,stdin);t[j++]=0,printf("%s",t)) | ~~~~~^~~~~~~~~~~