Compilare: user.c: In function ‘main’: user.c:15:21: warning: comparison between pointer and integer [enabled by default] for(i=0;s[i]!=NULL&&j==0;i++) {if(s[i]==','||s[i]=='{') {i++;while(s[i]!='"') {i++;if(s[i]==NULL){i=0;fgets(s,1030,f);}}i++; ^ user.c:15:99: warning: comparison between pointer and integer [enabled by default] for(i=0;s[i]!=NULL&&j==0;i++) {if(s[i]==','||s[i]=='{') {i++;while(s[i]!='"') {i++;if(s[i]==NULL){i=0;fgets(s,1030,f);}}i++; ^ user.c:16:58: warning: implicit declaration of function ‘strlen’ [-Wimplicit-function-declaration] while(s[i]!='"'&&i<strlen(s)) {fprintf(g,"%c",s[i]);i++;}fprintf(g,","); ^ user.c:16:77: warning: incompatible implicit declaration of built-in function ‘strlen’ [enabled by default] while(s[i]!='"'&&i<strlen(s)) {fprintf(g,"%c",s[i]);i++;}fprintf(g,","); ^ user.c:27:18: warning: comparison between pointer and integer [enabled by default] {for(i=0;s[i]!=NULL;i++) {if(s[i]==':') {i++;while(s[i]==' '||s[i]=='"') {i++;if(s[i]==NULL) {i=0;fgets(s,1030,f);}} ^ user.c:27:91: warning: comparison between pointer and integer [enabled by default] {for(i=0;s[i]!=NULL;i++) {if(s[i]==':') {i++;while(s[i]==' '||s[i]=='"') {i++;if(s[i]==NULL) {i=0;fgets(s,1030,f);}} ^ user.c:28:109: warning: comparison between pointer and integer [enabled by default] while(s[i]!=','&&s[i]!='}'&&s[i]!='"'){ fprintf(g,"%c",s[i]);i++;if(s[i]==NULL){i=0;fgets(s,1030,f);}} ^ user.c:12:10: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(s,1030,f); ^ user.c:15:116: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] for(i=0;s[i]!=NULL&&j==0;i++) {if(s[i]==','||s[i]=='{') {i++;while(s[i]!='"') {i++;if(s[i]==NULL){i=0;fgets(s,1030,f);}}i++; ^ user.c:24:10: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(s,1030,f); ^ user.c:27:109: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] {for(i=0;s[i]!=NULL;i++) {if(s[i]==':') {i++;while(s[i]==' '||s[i]=='"') {i++;if(s[i]==NULL) {i=0;fgets(s,1030,f);}} ^ user.c:28:126: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] while(s[i]!=','&&s[i]!='}'&&s[i]!='"'){ fprintf(g,"%c",s[i]);i++;if(s[i]==NULL){i=0;fgets(s,1030,f);}} ^ user.c:36:10: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(s,1030,f);} ^