Compilare: user.c: In function ‘eliminare’: user.c:7:5: warning: implicit declaration of function ‘strlen’ [-Wimplicit-function-declaration] for(i=0;i<strlen(s);i++) ^ user.c:7:15: warning: incompatible implicit declaration of built-in function ‘strlen’ [enabled by default] for(i=0;i<strlen(s);i++) ^ user.c:10:13: warning: implicit declaration of function ‘strcpy’ [-Wimplicit-function-declaration] strcpy(s+i,s+i+1); ^ user.c:10:13: warning: incompatible implicit declaration of built-in function ‘strcpy’ [enabled by default] user.c:12:13: warning: incompatible implicit declaration of built-in function ‘strcpy’ [enabled by default] strcpy(s+i,s+i+1); ^ user.c:14:13: warning: incompatible implicit declaration of built-in function ‘strcpy’ [enabled by default] strcpy(s+i,s+i+1); ^ user.c:16:15: warning: incompatible implicit declaration of built-in function ‘strlen’ [enabled by default] for(i=1;i<strlen(s);i++) ^ user.c:18:17: warning: incompatible implicit declaration of built-in function ‘strcpy’ [enabled by default] strcpy(s+i,s+i+1); ^ user.c:20:9: warning: incompatible implicit declaration of built-in function ‘strcpy’ [enabled by default] strcpy(s,s+1); ^ user.c: In function ‘main’: user.c:43:5: warning: incompatible implicit declaration of built-in function ‘strcpy’ [enabled by default] strcpy(cap,""); ^ user.c:48:15: warning: incompatible implicit declaration of built-in function ‘strlen’ [enabled by default] s[strlen(s)-1]='\0'; ^ user.c:49:13: warning: implicit declaration of function ‘strtok’ [-Wimplicit-function-declaration] cuv=strtok(s,":,"); ^ user.c:49:16: warning: assignment makes pointer from integer without a cast [enabled by default] cuv=strtok(s,":,"); ^ user.c:50:13: warning: implicit declaration of function ‘strdup’ [-Wimplicit-function-declaration] c=strdup(cuv); ^ user.c:50:14: warning: assignment makes pointer from integer without a cast [enabled by default] c=strdup(cuv); ^ user.c:56:21: warning: implicit declaration of function ‘strcat’ [-Wimplicit-function-declaration] {strcat(cap,c); strcat(cap,","); d=0; } ^ user.c:56:22: warning: incompatible implicit declaration of built-in function ‘strcat’ [enabled by default] {strcat(cap,c); strcat(cap,","); d=0; }