Submission #1222295

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Source Code Expand

#include<stdio.h>
int main(void){
    int i;
    int n;
    int dev;
    int now;
    int pn;
    int pre;
    dev=0;
    pn=0;
    scanf("%d",&n);
    for(i=0;i<n;i++){
        scanf("%d",&now);
        if(i==0){
            dev++;
        }else{
            if(pn==0){
                if(now-pre>0){
                    pn=1;
                }else if(now-pre<0){
                    pn=-1;
                }else if(now==pre){
                    pn=0;
                }
            }else if(pn==1){
                if(now-pre>0){
                    pn=1;
                }else if(now-pre<0){
                    dev++;
                    pn=0;
                }else if(now==pre){
                    pn=1;
                }
            }else if(pn==-1){
                if(now-pre>0){
                    dev++;
                    pn=0;
                }else if(now-pre<0){
                    pn=-1;
                }else if(now==pre){
                    pn=-1;
                }
            }else{
                printf("???\n");
            }
        }
        pre=now;
    }
    printf("%d\n",dev);
    return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:11:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ^
./Main.c:13:9: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&now);
         ^

Judge Result