Eroare de compilare: user.c: In function ‘scadere_1’: user.c:75:5: warning: implicit declaration of function ‘strrev’ [-Wimplicit-function-declaration] strrev(a); ^ user.c:86:12: warning: comparison between pointer and integer [enabled by default] if(a[0]==NULL) ^ user.c: In function ‘main’: user.c:96:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&t); ^ user.c:97:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%c",&x); ^ user.c:99:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s",n); ^ /tmp/ccoPAeNl.o: In function `scadere_1': user.c:(.text+0x195): undefined reference to `strrev' user.c:(.text+0x1d1): undefined reference to `strrev' collect2: error: ld returned 1 exit status