Compilare: main.cpp:4:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] main(){FILE *f = fopen("minim.out","w");freopen ("minim.in", "r", stdin);int n,nr[N],s,smin,p,i,m,pi,ps;scanf("%d",&n);for(i=1;i<=n;i++)scanf("%d", &nr[i]);m=n;while(m){smin=non;p=1;s=0;for(i=1;i<=n;++i){s=s+nr[i];if(s<smin||(s==smin&&i-p+1<ps-pi+1)){smin=s;pi=p;ps=i;}if(s>0){s=0;p=i+1;}}fprintf(f,"%d %d %d\n",smin,pi,ps);for (i=pi; i<=ps; ++i) nr[i]=non;m=m-(ps-pi+1);}} ^ main.cpp: In function 'int main()': main.cpp:4:73: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] main(){FILE *f = fopen("minim.out","w");freopen ("minim.in", "r", stdin);int n,nr[N],s,smin,p,i,m,pi,ps;scanf("%d",&n);for(i=1;i<=n;i++)scanf("%d", &nr[i]);m=n;while(m){smin=non;p=1;s=0;for(i=1;i<=n;++i){s=s+nr[i];if(s<smin||(s==smin&&i-p+1<ps-pi+1)){smin=s;pi=p;ps=i;}if(s>0){s=0;p=i+1;}}fprintf(f,"%d %d %d\n",smin,pi,ps);for (i=pi; i<=ps; ++i) nr[i]=non;m=m-(ps-pi+1);}} ^ main.cpp:4:119: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] main(){FILE *f = fopen("minim.out","w");freopen ("minim.in", "r", stdin);int n,nr[N],s,smin,p,i,m,pi,ps;scanf("%d",&n);for(i=1;i<=n;i++)scanf("%d", &nr[i]);m=n;while(m){smin=non;p=1;s=0;for(i=1;i<=n;++i){s=s+nr[i];if(s<smin||(s==smin&&i-p+1<ps-pi+1)){smin=s;pi=p;ps=i;}if(s>0){s=0;p=i+1;}}fprintf(f,"%d %d %d\n",smin,pi,ps);for (i=pi; i<=ps; ++i) nr[i]=non;m=m-(ps-pi+1);}} ^ main.cpp:4:156: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] main(){FILE *f = fopen("minim.out","w");freopen ("minim.in", "r", stdin);int n,nr[N],s,smin,p,i,m,pi,ps;scanf("%d",&n);for(i=1;i<=n;i++)scanf("%d", &nr[i]);m=n;while(m){smin=non;p=1;s=0;for(i=1;i<=n;++i){s=s+nr[i];if(s<smin||(s==smin&&i-p+1<ps-pi+1)){smin=s;pi=p;ps=i;}if(s>0){s=0;p=i+1;}}fprintf(f,"%d %d %d\n",smin,pi,ps);for (i=pi; i<=ps; ++i) nr[i]=non;m=m-(ps-pi+1);}} ^ main.cpp:4:244: warning: 'ps' may be used uninitialized in this function [-Wmaybe-uninitialized] main(){FILE *f = fopen("minim.out","w");freopen ("minim.in", "r", stdin);int n,nr[N],s,smin,p,i,m,pi,ps;scanf("%d",&n);for(i=1;i<=n;i++)scanf("%d", &nr[i]);m=n;while(m){smin=non;p=1;s=0;for(i=1;i<=n;++i){s=s+nr[i];if(s<smin||(s==smin&&i-p+1<ps-pi+1)){smin=s;pi=p;ps=i;}if(s>0){s=0;p=i+1;}}fprintf(f,"%d %d %d\n",smin,pi,ps);for (i=pi; i<=ps; ++i) nr[i]=non;m=m-(ps-pi+1);}} ~~^~~ main.cpp:4:244: warning: 'pi' may be used uninitialized in this function [-Wmaybe-uninitialized]